Predator from the first movie v. Killer Croc of the Batman comics. Unarmed combat.
@supercharger: @nick_hero22: except that is unarmed combat.
Nick is right the wrist blades of the predator will cut through that croc without a problem. Predator is more better at hunting down its prey. its faster too. can go invisible. it has other feats over a killer croc.