Not my personal opinion, but one very hard to disagree with.
Firstly Cotto has a tight defense, both gloves held high to his ears, leaving him susceptiable to the uppercut, as demonstrated in the Margarito fight. I feel his defense will hold him in good stead against Manny though, as I don't think his uppercut will threat Cotto, and Cotto's defense should negate Manny's left and right hooks. Because his defense is tight against Manny's best weapons he can stalk him without being overly fearful. And Cotto stalking is Cotto at his best.
Cotto is a very versitile boxer, And Manny isn't comfortable with versitile boxers, note JM Marquez. Cotto can switch hit seamlessly, I feel he has the better jab. Manny will fight to his strenghts, speed and power, lateral and straight line movement. But I think Cotto has had the experince from Mosley and Judah that will help him deal with Manny. Cotto will hit Manny, Oscar or Hatton never did, i think there are big questions about how Manny will deal with being hit by someone as powerful as Cotto, I don't think Manny will have the resistance of a Clotty or Margarito.
Cotto to win mid to late stoppage, with Manny winning on points up until the stoppage.
http://www.bbc.co.uk/dna/606/A59574298I request Water Man's humble O.