Floyd didn't really hurt Gatti with any 1 punch, and that match indicates nothing of his punching power.. THe fact is that Gatti got hit with every single punch Floyd threw, and he had all day to line them up for maximum impact.. Plus Gatti isn't some iron chinned durable guy, he cant be hurt quite easily... If anything the Gatti fight showed Mayweathers lack of power at the weight, because any other fighter who connected with everything they wanted to like that and were consistently landing their absolute best punches would have gotten him out of there in under 4 rounds.