Superman: Given a rematch, and no kryptonite/red sun involvement.
Spiderman: I made my case for him in the original thread. Spidey is stronger, faster, more agile and just as smart as Batman. Throw in the spider-sense and it's a done deal.
Wolverine: Super-Human healing abilities, admantum claws and skeleton. Plus the fact that he is more vicious than Batman could ever be.
Silver Surfer: Need I say more? He could take anyone on this list easily.