@mbatz: You are literally rambling nonsense, also the fly went back in time and still didn't change the outcome of the future, it literally says there at the end of the comic, the fly's time travel didn't affect TOBA.
The author likes to leave it ambiguous for the reader, the editor of that particular comic already confirmed it was a multiverse.
Hulk destroyed divinity, creation and entire concepts like light and color, he wasn't just going around destroying a 3D universe....
That means by default hulk wouldn’t be able to contend if you are aware that hulk can only destroy 3D constucts and not 4D constructs such as a universe or pocket dimension.
Mr. Mxy destroys 4D contracts regularly so you’ve proven yourself wrong even with your multiversal hulk which I agree he is he doesn’t have feats to kill the unkillable.
Mxy kills him since he’s stronger then most DC multiversal beings
He destroyed 4D concepts, again you are rambling nonsense and don't know the material.