Mayweather took a nasty head butt to the eyes, about one hundred rabbit punches and a few low blows. Maidana was visibly hurt by at least two legal body punches.
Floyd Mayweather jr, he looked like a Beaten man in the post fight conference. Maidana looked unmarked and still looking strong.
What did you expect? Maidana to outbox Mayweather and fight clean? Maidana is a brawler who pressures his opponents, I don't think mayweather wants any of that again. He may not want a rematch after the shots he took.