the issue with this is that literally nothing in Erza's arsenal matters in any capacity unless she uses the Hammer specifically, as Sakura can just regenerate from everything, and if all else fails, Katsuyu can heal her as well
she uses it to block an attack cuz at the time, both her Adamantium Armor shields were broken. She literally never used it to attack anyone a single time
Chasing Natsu with a giant hammer is pretty obviously a gag scene. It's never shown up in any other fight after that specific arc
The Hammer's effects also don't work if she's not using it. It's not like she can store the hammer in her Requip pocket dimension and still negate Sakura's healing, she needs to be actively swinging the damn thing and actually make contact with Sakura. The hammer doesn't have an aura of negation, it needs to make physical contact, meaning in order for Erza to negate the passive healing in the first place, the hammer needs to be in constant contact with Sakura at all times, something that she can't really do unless she literally pins Sakura down with it, which doesn't work cuz Sakura's LS is WAY higher
1, Cuz all of Natsu's fights against Erza were not only gag scenes, except in early FT, Natsu was never shown or stated to be superior to Erza in any capacity. Her status is superior (S class mage vs non-S class mage), her feats are better (stomps Natsu and Gray at the same time and usually 1 shots them as gags, performed better against most of the main antagonists up until this point compared to Base Natsu), and she has armor that directly counters Natsu (Flame Empress). Her skill is still impressive, but comparing it directly to Natsu when she has multiple advantages over him most of the time might not be as accurate as you think
2. fair enough, can't argue with that
3. Erza and the rest of the team went through insane training in those few days and also got their Second Origins unlocked. She definitely wasn't lazing around, and she should have definitely gotten at least a bit more skilled afterwards
Again, using it against giant monsters and not even hitting them with it makes this point doubtful
Using it against Cobra when he was empowered + protecting the Infinity Clock, a weapon that the hammer is intended to directly counter, as well as the fact that Cobra is a poison dragon slayer and can easily be seen as more "evil" than a pink haired little girl wearing an oversized vest, again makes this point doubtful. It's definitely nowhere near her first option, and she has no triggers to allow her to view it as anything more as an "oh shit literally all of my swords are broken let me use the only thing I have left" panic button, and at that point Sakura would have already won
that is definitely true but even then she wasn't really taking damage unless the smaller ones combined their attacks, or the bigger ones caught her off guard She was taking dozens of hits throughout the fight and for the most part she was fine and had a lot of stamina to spare. Katsuyu should have much higher scaling compared to the monsters in the 100 Monsters Challenge due to the fact that Sakura (and thereby Katsuyu) isn't much weaker than Erza herself, and is actually stronger than erza assuming she doesn't use her strongest armor/weapons, so a ton of smaller slugs dousing Erza with acid strong enough to melt rock and steel and (maybe) headbutting her will prob do a lot more than the 100 monsters. Heck, Katsuyu doesn't even need to split, she just stays massive and sprays Erza with an even bigger wave of acid that she doesn't resist
I don't recall any enemy in x793 being able to skill diff blitz level amps. Can you elaborate more on this?
Erza can't do this without Heaven's Wheel or Ataraxia armor, the former of which isn't particularly effective against someone who can regenerate as fast as Sakura can, and the latter she doesn't have in this key
She also has never shown to be able to telekinetically use other weapons from her other armor sets with Heaven's Wheel. It's not Gilgamesh's Gate of Babylon, she just has over 200 swords from that Heaven's Wheel set. Although it's probably possible she can still use other weapons during this state, it's not in character
I do want to mention a couple of things on top of all of this:
1. The Holy Hammer negating Sakura's regeneration isn't an instant wincon. Their AP is still relatively comparable, their skill is arguably comparable (admittedly leaning towards Erza but Sakura is still no slouch), and the Holy Hammer doesn't just shut down Sakura's healing permanently. It only negates certain effects on contact, meaning Sakura can just turn it back on.
2, Katsuyu can just melt the hammer and now Erza's only wincon is gone. Erza's only instance of using the hammer after the Key of the Starry Skies arc is as a shield after her Adamantine Armor breaks, not for offense, and if that's the case, if Katsuyu sprays her with acid, all of her weapons are just gonna get corroded, with the Hammer not being an exception since it doesn't resist acid or corrosion inducement or deconstruction or anything of the sort.
Erza's only wincon is with the hammer and it's out of character
Sakura has multiple wincons (which mostly boil down to just beating the shit out of Erza after a while) and she also has an in-character response (Katsuyu) to Erza's out-of-character wincon, meaning Erza loses the war of attrition
