Cotto will out box him the first few rounds. Then Jr. try to make it a fight and Cotto will get a TKO 10th or 11th. Jr. just doesn't have what his father had. No way he wins!
This would be a much better fight, and more people would want to see this one. After 12 bloody and hard fought rounds Cotto would walk away with a UD in a close fight. I don't see either stopping the other.