Joe Frazier`s quickness. You don`t hear or read people talk about how quick Smokin Joe was. He was able to get inside on Ali with his head movement but that hook was like a whip. Fast, short, precise punches. Ali`s strength. Not power but his ability to wrestle in the clinches and hold his own or more than hold his own. Felix Trinidad`s right hand. It was a devastating weapon.
Foreman - Stamina Tyson - Heart Liston - Heart Liston - Chin Liston - ring intelligence Liston - boxing ability (extremely underrated) Liston - power (somewhat underrated)
Most of the time you hear about his devastating lefthook. That was usually his finishing punch. I think his righthand gets underated because it often setup his finishes. He was a two handed threat compared to a guy like DelaHoya.
Pep-Power. 61 KO's in a career is a pretty substantial amount, and he could have scored a few more had he not worn the cuffs in a few of his fights. Broke Bartolo's jaw with a single right hand and starched him. Scored numerous kd's throughout his title reign even in fights that went the distance. He's considered to be among the most feather-fisted of ATG's, but the stats indicate that he had considerably more pop than he's generally given credit for having.
I think on the same note as Pep, Pernell Whitaker had more pop in his punches than he his known for. He punched to the body with authority and I remember he dropped Pineda with a bodyshot in a fight at 140lbs. Sweetpea also hurt Chavez which was a big surprise at the time.