I think it depends on what kind of game plan they both enter the ring with.If they both go in there swinging for the fences,I think that Cotto probably wins that battle.On the other hand...if Zab works off the jab,throws combinations,has his stamina up,and doesnt try to be overly impressive...he wins a UD.If Cotto mixes it up by throwing 123 combos followed by an uppercut in close range...I see him breaking Zab's will...and taking the fight.