first off, you have to think about the weight cutting issue. pep wasnt really cutting weight and weighed at the featherweight limit while mayweather even at super feather was still cutting weight and would naturally be at least 15 pounds bigger. also, remember that pep was virtually unstoppable early on in his career before he got into a plane crash where the doctors said that he would never be able to walk again yet he ended up recovering and boxing for many years after that.

pep is one of the greatest fighters ever. easily the greatest featherweight ever. there is no way that you can watch pep and think that he wouldnt be the best featherweight right now easily. so if we are comparing him to mayweather at 130, then it would be a close fight because mayweather would be quite a bit bigger still. i couldnt say for certain who wins.