Why Cotto presents trouble for Mayweather

I knew Mayweather could beat hatton on the outside, but I wasn't sure how he would cope with Hatton on the inside because Hatton is so good on the inside, however Mayweather was better than anything I've seen at tieing Hatton up, not letting him go to the body, and using his sly little moves to make punches that would land on anyone else hit him in the shoulders or on the back. Now Cotto is more mythodical than Hatton, but so was Castillo, Castillo was effective because he didn't rush in, he used a tempered pressure attack and Mayweather has difficulties tieing a guy up if they haven't punched yet because he gets antsy. I think Cotto's jab will be a big factor because it won't necessarily hit Mayweather a lot but it will force him, Mayweahter, to duck it and come inside or it will force him back to the ropes where Cotto will be able to get off body and head shots. Cotto is very accurate and he has good hand speed. I think Mayweather's foot speed and defence might make this a nightmare for Cotto, but he is resilient and he doesn't tire. Despite all this I still see Mayweather being the stronger as the fight progresses and I see him eventually winning a ud by 4 rounds.