Honestly, May should win this fight but it's not as promised as people are hoping either. The only interesting factor is Manny's foot speed, in Floyd's fights against guys like Cotto and Canelo he could hit these guys and be on the other side of the ring in seconds. He did this all night long and Floyd actually hits so damn fast its hard to see the punches coming which = hurts like .
The problem for May is that when he hits Manny and goes on the other side of the ring, Manny will be right there. Yes, Canelo hits hard and so does Cotto but Manny has the lambo foot speed to match May. It will create new problems. My prediction is that Manny will have May fighting from the ropes all night and somehow May edges him when Manny gasses by rounds 11-12. However, I wouldn't be stunned if Manny stole a decision.