Cotto may be able to time well with his punches, but I dont think you understand the realm of where floyd comes from. The thing with floyd is that he is so versitle that he attacks with several random punches within the same stance, which throws off his opponents and thats why many dont "see" his punches coming, besdies his blinding quickness. Take a look at the Hatton fight in round 8, mayweather was in his bend over stance where he keeps his back foot on his toes, from there he throws a series of right hand leads, jabs to the body, and short leaping hooks. Thats why its almost impossible to time him because he's not the conventional fighter in the sense that he has a "pattern" to follow. He will throw several punches each from different angles within the same stance, and also as he back peddles or utilizes his shell defense.