In the next panels she gets hurt by his explosions. Why would she scale massively above them if she can't consistently dodge them?
So, just to clear things up. Daki getting hurt by the explosion doesn't mean her speed is below the explosions. I'm not sure where the inconsistency is. The very next chapter shows
this scene, likely the one you're referring to,
where Tengen throws his bombs directly at Daki's obi and Gyutaro's sickle. Gyutaro, who is narratively the superior demon, gets caught by surprise, barely managing to react to the bombs and avoid cutting them, while Daki, who is consistently shown being blitz tiers below Tengen and inferior to Gyutaro, naturally fails to react at all. If Gyutaro was caught off guard and barely avoided the bombs, why do you think the demon he carried to Upper Six would be as fast? And if you've watched the anime, or at least the clip in which the scene takes place, you'd know these explosives weren't even supposed to kill Daki in the first place. Tengen used the smoke from the bombs as cover to decapitate her.
To emphasize the speed with which Tengen threw the bombs: Daki was still mid-air, and her obi belts had nearly reached Tengen when he pulled the bombs out. Tengen threw the bombs so fast, they reached Gyutaro before Daki's obi reached Tengen, clearly showing us that the bombs were moving faster than Daki's obi.
TLDR: Daki just got blitzed by Tengen's throwing speed, not the explosions themselves.
Now if Daki doesn't scale above them, why would Tengen?
Daki absolutely scales above the speed of the explosions, and Tengen himself has been shown being far superior to Daki.
Here's him nonchalantly decapitating Daki without even seeming to move from her POV (the anime emphasizes the speed difference even more), while surprising Tanjiro, who also blitzed Daki at one point.
Here's Tanjiro getting blitzed by Gyutaro, with his sickle millimeters away from Tanjiro's jaw,
before Tengen tosses him aside to save him and evenly clash with Gyutaro.
And here's Tengen doing the exact same thing again (the anime has Gyutaro's sickle centimeters away from Tanjiro's eye).
I'll let the person who made the calc actually defend the math/method, but if your "debunk" is Tengen not scaling above his bombs because Daki doesn't, then you should know that
narratively Tengen is the far faster character here.
Feat is missing, but I'd assume it falls under the debunk for the first feat.
This feat is performed several chapters earlier, by two different characters. So this just isn't a debunk at all. Why even include it in the thread?