Tanking hundred's of Ittou Kasou, 50 Black Coffin Spells, reaching ascended being level, being immune to zanpakutou effects, and stated to be able to blow away Baraggan's respira with reiatsu, among other feats. I can send you a link to his feats if you like.
SS had Yamamoto. They have the ability to negate all reiatsu which cuts off Aizen's source of power, there are various other hax powers at SS disposal yet it didn't happen. I highly doubt Aizen could be killed by a simple mountain buster when there are more potent and hax techniques than that.
That's assuming Aizen can be killed by that which I doubt since SS was unable to kill him. Also Hougyoku Aizen can teleport. His whole loss was pure CIS and PIS. Even then he needed to be imprisoned. In this scenario though he loses.
I don't agree with that. Without CIS, KS is essentially a short range version of the Moon Eye plan. Aizen could beat any HST character with it (besides Juubito just because) outside those who are blind. Out of those guys Aizen could beat them with just his other powers easily except maybe Fujitora.
No I was saying its speculation on whether Perfect Susanoo or Whitebeard's quake is stronger. Meaning i dont think it's concretely clear if Perfect Susanoo could tank a quake or multiple quakes, or if it would break/be bypassed.
People like pitting Toriko against Z probably because it's one of few well known series that can compete with Z in power that doesn't rely on hax primarily, rather raw power, much like Z. There are a few exceptions like Saint Seiya, but they're too strong.