The more impressive knockout was Pacquiao's, coming up in weight and knocking out the #1 140lber at his own weight. But, I also like how Mayweather dismantled Hatton over 10 rounds with relative ease. Plus the fact that Mayweather was the first to beat Hatton and stop him.
Mayweather's KO over Hatton was truly impressive, mainly because check hooks are so hard to pull off effectively, but I have to go with Pacquiao. Pac's shot wasn't a random, wild punch that he threw with his eyes closed (like Tarver did on Jones). If you watch the replays in slo mo, you can see Pac's eyes actually zero in on the target (the right side of Hatton's jaw) like a heat seeking missile. I don't think I have ever seen such a well-executed shot in all of the years I have watched boxing.
Pacquiao's when Ricky went down there was a horrible moment when i thought he might not be getting up again plus it was unexpected going into the fight . Although i thought Pacquiao would stop him I thought it would be in about the 8th or 9th round with the ref waving it of due to the amount of punishment ricky was taking . I was Just watching it stunned
I kinda see where you're coming from, and I agree - to a certain extent. But if PBF's meant more, it didn't mean that much more.
I wouldn't go as far as to call PBF "feather fisted". He isn't a hard puncher, but he isn't feather fisted. Paulie Malignaggi is feather fisted. I'd give Mayweather's punching power a C+ while Pac would get a B+ and Malignaggi would get an F
I think it was more Mayweather tiring him out. Hatton's legs had gone at that point. Probably the first time i've seen Hatton have stamina problems during a bout.
Mayweather's was more impressive due to all of the reasons above, but I would like to add that Hatton's punch resistance was pretty much gone after the Mayweather fight, thus making Mayweather's KO much more impressive.