Aggy would take it here. He isn't just a powerful being or an avatar. He is a dimensional ruler, and has never even been shown to have any limit or weak point.
Whereas, Thor was able to hammer a hole in Exitars big ole head.
Name how often a celestial was destroyed... this is too hard, because when has agamotto been forced to even fight in his own realm.
__________________ Quotes from Hia8:
"I claimed that the science is sometimes faulty."
"You don't understand. This is fiction. That means none of this stuff really happened."
"There is no writer to purposely ignore a character's natural ability just because it suits the story."
"in some cases because the writer knows that Character A will dominate Character B easily and refuses to allow this to happen for the sake of the story."
Yeah, and Galactus couldn't really harm him. If I recall, Galactus kept blowing Agamotto up, but he would keep reforming. So this battle is going to either be a stalemate or Agamotto would eventually win after a long battle.
Here is my problem with Galactus is that people said that Galactus was truly worried about God Force but yet the most powerful God Force I bet Thor ever used which destroyed Thors Hammer and Strength Belt hardly registered with Exitar
Exitar would have far more capacity for energy discharge but in his own realm, Agamotto should be able to define reality itself. Properly written, Agamotto should win inside his own little pocket universe.