Dead pool for sure!
The only reason I say that is, Dead pool can not die! He would ultimately win in a death cage match. Bruce Wayne is still a human, he might have a high IQ and tons of gadgets but ultimately can still be killed.
Still would be a great fight!!!
Dead pool because he would shoot Spider-Man dead in the head
batman would.
Whoever the author of the story wishes.
Batman would beat Sonic.
batman
batman
Batman.
Batman would find a way to win.
Batman would find a way to win.
Batman would win because in Batman Arkham Origins, Batman defeated Deathstroke.
Batman would find a way to win.
deadpool, he literally can't die