If my memory is correct, Cotto's favorite punch was the left hook. In this fight it would be in his best interest not to throw a single left hook. He is probably quicker with his hands than Cuevas and would win that exchange more often than not, but, when he loses that trade, it would be disastrous.
"Don't hook with a hooker" is what Cotto's trainer says at the post-fight presser when Cuevas stops Cotto in 6