I have not used any fallacy or circular reasoning whatsoever though??? I have literally just stated what advantages Deku has over Toph and claimed that he would win based on those. You're the one who commented on an already concluded thread with arguments that I've addressed previously.
I know Toph can sense Deku midair,thats why I said she can't do it well. Compare Toph being able to sense metal in Korra's bloodstream to her sensing the metal on Deku. The only parts of Deku she can see at all would be his boots and gloves. What does that even tell her for her to reliably block all of his attacks when he's mid air? I've addressed this point several times, Toph is not going to know that air pressure waves are coming her way just from sensing Deku flicking his fingers in her general direction through his gloves. That is far fetched at best.
She predicts from vibrations through the ground, yes. That doesn't help her when Deku is midair and she can only sense the small metals on his equipment.
Toph DOES get one shot by any attack from Deku, her being better than other featless fodder is not going to increase her durability.
Deku at 20% is much stronger than his 8% key, so much so that he can one shot people comparable to his 8% self, which is 3.19 tons. Toph's earth walls scale to somewhat over 3 tons at best, as no one on team avatar scales to combustion man other than Aang with air/fire bending and Zuko. Toph's earth walls are not strong enough to stand up to Deku at 20%, he can break them easily, and has shown himself capable of doing so to other high 8-c earth walls.
You want feats of Deku breaking earth? Deku vs Overhaul, he breaks the ground so badly it fragments into pieces so small Overhaul can't even use them. He stomps the ground so hard he blocks Overhaul's quirk several times. He blocks attacks from Overhaul by breaking the rocks attempting to stab him.
You want feats of intelligence? Deku analyzed the speed at which Overhaul could use his quirk in the 2 minutes he's seen his quirk in action. Deku beat the Gentle Criminal by analyzing his fighting style and countering him through superior tactics like fake outs and improvisation. He used Gentle's own elasticity quirk against him several times, and could predict every single instance of his quirk being used, while midair, after having been unable to do so not even a minute earlier. That isn't even regarding the fact that Gentle has been honing his powers for decades, and could causally stomp pro heroes with more experience than Deku as well.
It is not an assumption that Deku will survive the initial assault on Toph from the ground, it is an absolute. There is nothing in Toph's arsenal that Deku has not already seen and can predict or react to in seconds. Deku will easily figure out what Toph's powers are and counter her accordingly, learning more and more about her as the fight goes on, while she's going to be given more and more disadvantages.
Are you kidding with the Overhaul example? Deku lost to Overhaul not because of his power, but because Overhaul has some of the best prediction abilities in the verse, and even then Overhaul couldn't kill Deku in retaliation because Deku destroyed most of the battlefield. There was a lot more going on in that battle than "Deku didn't beat someone similar to Toph so he loses to Toph". That battle was months ago to Deku, who has become far more skilled and now has the experience to deal with people like Overhaul, he's not just perpetually bad at fighting earth manipulators now.
Deku can maneuver just as well mid air as he can on the ground currently in the manga. He has not had issues midair for literally months, your information is absolutely outdated on this front. He learned to apply precise movements while midair from breakdance training with Mina, and applied it perfectly against Gentle several times in the fight. Every instance of Deku using black whip has been him using it midair. When he wants to use Air Force, he goes into the air. You have no idea what you're talking about if you're still saying Deku has trouble fighting in mid air.
What dust is being kicked up, they're in an open plain??? I'm assuming there's just grass and dirt, Deku isn't punching dust clouds into existence. Any air pressure hits from Deku that hit the ground are just breaking the ground further. Also, Toph has never shown the capability to bend the dust kicked up from other people's attacks to attack them back. She is a sand bender but that doesn't means she can do what you're claiming she can.
> "Has he ever used the whip while flying an extended period"
> Every instance of Deku using black whip is him in midair
Deku uses black whip almost exclusively in midair, idk what you mean when you ask this question. He would leap into the air, pull out black whip, and grab Toph. She has no counter to this.
Also Deku can't fly for long, that's why I said he'll react to her when he lands on the ground again. Also, Deku touching the ground does not guarantee a loss, what are you talking about? Toph has no way of hurting Deku without him reacting, and he'll just escape into the sky again, or break any attempts at attacking him with his sheer AP.
I honestly don't care if it irritates you that Deku analyzing Toph's moveset and abilities will result in a win for him, because I'm just stating what he can do. Deku's analysis is better than what Toph can handle at the severe disadvantages she is under. He will predict her bending attacks and will beat her.
Deku's time limit with 20% is incredibly arbitrary as he says that he can't hold it for long due to pain, which in the current manga isn't even as bad anymore, but then proceeds to hold it for several minutes, while being impaled several times. Deku's pain tolerance is high enough, especially currently, that he can hold 20% longer than what you're assumig just from reading his profile and taking his words from months ago at face value. There is a time limit, but it not only has definitely increased from the Overhaul arc, but is already not even much of a factor to Deku because of his pain tolerance.
Toph will not go underground in character, you yourself said her fighting style is agressive. By the time she could ever come to that conclusion, she'll have been one shotted or tangled by the black whip.
Deku wins if he touches Toph with any of his moves that immediately one shot her, and that she can barely sense.
What do benders have to do with dealing with black whip????? Name a single bender in Avatar that Toph has beaten while they are mid air and reaching to grab her from several meters away with no tell or sign of what they are doing, or them being capable of doing so.
By this logic, Deku beat the Gentle Criminal who beat professional heroes, so why can't he deal with Toph? The line of reasoning you just used for Toph dealing with black whip is faulty.
Read above for what 20% full cowl is like in the current manga, it doesn't even damage Deku anymore by his own words, just causes pain, which he can deal with. Stiff movements are true, but any one of those "stiff" movements would one shot Toph from several meters away, and she can't even capitalize on them because she can barely sense his presence when he's mid air.
Black whip being usable for only a second is incorrect, Deku can clearly hold it for longer than that currently in the manga, and it should be updated. He just recently grabbed several villain bots from tens of meters away from, pulled them in, and destroyed all of them with a single kick. "Can only be used for a second" is either clear misinformation or a hyperbole on how long he can use it currently. He can very easily extend black whip out far enough to reach and grab Toph, then pull her in for an attack, him holding it for only a single second is ridiculous.
He also doesn't hold 20% for as short of a time as you're implying. The time Deku can hold 20% is arbitrary, but considering his pain tolerance, we can assume it's for a decent portion of his stamina, especially since it doesn't even damage his body anymore by his own admission. If all the information about Deku you're getting is from only his profile, and you haven't actually read the MHA manga, then your information isn't accurate as you have no context. Deku's pain tolerance has only increased, as has his ability to use higher percents of OFA. He isn't going to run out of 20% 30 seconds into the fight.