It's not a matter of how powerful the attack is. He just regenerates from it. He also breaks the 4th wall. As for your second thing, that also means the GEoM can't do anything to him either, so...
So if the entire universe exploded, he'd be totally fine? Can he use this offensively? Imprisoning someone in a star or an alternate dimension doesn't count as a win for the guy banishing the other person?
He's survived enemies who've hit him with cosmic energy. Not the same thing, I know, but the most similar thing to that. He "killed" the writers of his comic books. I suppose so, but that's a really lame way to end a "fight".
No. Destruction of reality is something his powers WON'T save him from. Unless he escaped through the fourth wall...
Okay, I just found out that Deadpool HAS died before. Apparently, he is weak to certain corrosive substances. Guess he isn't immortal after all. I'd concede it to the Emperor entirely at this point.
Superbeings have weird weaknesses sometimes. The original Green Lantern's constructs couldn't (and still can't!) affect wood.
Haha, well, that's comic books for you. Alright, I've thought of a new one that was discussed on another website a while back; Darth Vader vs. this foul creature: Vader gets EU feats.
