It says in the OP that “You can base your vote on any criteria you like.” So I suppose you could say because one guy would beat up the other, or one is more likable or more nobale, or has a better costume.
Batman
Spider-Man
Wolverine
Spidey
Batman (15-3)
Superman (12-6)
And we all know who wins the next match.
Isn’t that a matter of preparedness?
Batman (15-3)
Spider-Man (12-6)
The Final Round is up.