I believe this is a ploy. Wanting Mayweather to believe what usually comes with bulking up improperly. No trainer with half a brain would give a disadvantage out like that if it were true. Marquez is probably shockingly bulked up with his speed intact. No mater how hard a fighter is known to train when you know your opponent, even a little, you naturally have expectations in the ring. They are attempting to skewer those expectations.