This is tough one since they both like to hit and run but if i had to choose one id go with Joan Guzman to hit Mayweather more to get a close split decision

Wtf?
Guzman tries to fight like Floyd (he's just busier, while Floyd is more accurate).

Floyd would beat him.
Faster, more skill, smarter, bigger puncher (at that weight), etc.

Mayweather has all advantages, Guzman just throws more punches.

Guzman is similar to Mayweather but he is a poorer version of Mayweather people seem to forget how great Mayweather was at Superfeatherweight i would say Mayweather wins a tough UD.

Mayweather would brutalize him.

Floyd would probably edge Guzman at 135 but at super featherweight Guzman would take a split decision. Floyd don't like fighting fighters that has equal or better boxing ability. (Zab Judah gave him problems, plus he was past his prime).Guzman counter's better off the ropes and hes a better puncher IMO. and i hate when people call Guzman a weaker version of Floyd. the only comparison i see between the two is that they both counter off of the ropes, that is a classic Mayweather family tradition. Mayweather Sr. trains Guzman so of course hes going to do it. but thats the only comparison i see between Floyd and Guzman.