theres no way to really tell, imo it would ve been alot more competitive. Mosley was simply mentally crushed after he landed those hard shots. Mayweather came back from that strong and started landing hard shots. When you you hit someone with all youve got and they dont go down, something in terms of "o sh*t" pops into your head. Mayweather proceeded to make him miss, which further made him give up.

that being said, Manny is much more hittable then mayweather is, if mosely was getting off, he would have some momentum going, dont know who wins until i see how mosely does in his next fight because honestly, i dont know if mosely got old or if it was maywaether