Wow! I never thought about this fight. If this fight was made today it would be a "pick em" fight. Prime for prime I give Cotto the edge on pionts, wont be easy though. Action fight hands down.
Prime for prime Marquez is eons above the fighter Cotto ever was. Current Marquez vs prime Cotto? Say the one that got a victory over Mosley. Close fight through 6 rounds. Marquez slowly starts to take over getting better with each passing round passed the 6th. Competive buy clear decision for Marquez, maybe even a KO if Cotto decides he needs to step it up late having seen himself losing the late rounds. A fighter lacking in stamina is not about to beat Marquez. He's as conditioned as they come.
This would be a competitive fight early but the longer the fight lasts the worse it gets for Cotto. I can see Marquez seriously hurting Cotto late.
the question is? when was Marquez prime? at 147? imo his prime years was when he beat the **** outta toothbrush, diaz, Pac 1/2, barerra.