If you could do it with physicality alone Baldomir and DLH would have done much better. Boxing? I am of the opinion, "Anything Cotto can do FMJ can do better." Manny was there to be punched when Cotto was patient and picked shots. I will say though that if FMJ gets lazy and comes in with some BS? It might be a very interesting fight.
I keep envisioning Pacquaio's workrate and power keeping Floyd more defensive than is normal and winning a close fight. But also you have to go with the whatever JMM can do then surely Floyd must be able to. Also i think Floyd is a very underated puncher, and he is very hurtful when he plants his feet. As for the question Mayweather.