Mosley is too flat footed at this stage in his career and his jab would need be stronger,more authoritative. Also,he does have a few technical deficiencies which were not so obvious when he was BLINDINGLY fast at 135 but show up mire now. EG his defence. As great as he looked against Collazo,he got cracked with quite few left hands and was circling IN to Luis' left hand rather than away. Floyd would exploit these weaknesses. However,Mosley hand speed and power would still make it a great fight! Mayweather UD for me though.