How many fighters could actually put down a guy like Julian Jackson himself? Heavyweights might have a lot of power but almost all lack the sharpness to really put down a good guy for more than 10 seconds. Naseem Hamed comes to my mind.
Freddie steele came to my mind.. had a deceiving ko record but was as sharp as they come an could drop fighters with one shot. Not on jackson level but not many are
Arthur Abraham Nonito Donaire Oscar de la Hoya Pipino Cuevas Ezra Sellers Wayne Alexander David Tua Manny Pacquiao Randal Bailey
Iron Mike. Ive never seen someone fall down 3 times from knockdown like the Berbick fight. Spinks was down and twitcing for a while. Oscar had one of the sharpest left hooks ever, the hooks in the Ruelas fight were scary. And he stopped a roided Vargas. Hamed got some serious leverage and power.
I think it's more to do with the fact that he was unable to land or follow up on most of the better people he faced. Foreman, for example, was able to repeatedly land his big shots and continue to do so when the oponents were hurt. Shavers would land a bomb here and a bomb there that would badly hurt his oponents but wouldn't hit them with the follow up punches.