Keep in mind that Pac came up from a lighter weight and punches harder than Mayweather. I'm leanin towards Nate on this one.
Whos a bigger joke on this forum? Reaper or farmboxer? Im leanin towards reaper aka capfunds, aka schooly *****
campbell does have a very wicked, powerful right hand. could be that nate might have the edge, but floyd is faster in letting his hands go and very precise. i have seen many a smaller fighter punch harder than bigger fighters especially while sparring, but without the gear it's different because the headgear isn't as obstructive to vision and shorter, more compact punches that wouldn't be as effective with headgear are more effective without. probably why many stories of sparring fighters getting the best of elite fighters like joe louis and ali and recently peterson on floyd. campbell a more powerful puncher, floyd the better boxer
I think it's all a bit subjective because we have yet to see Nate KO someone at 140 and above, even though Mayweather hasn't exactly shown bone crunching power at 147.
Probably Campbell, but we'll never really know until we see both guys fighting similar opposition at the same weight.