Marciano did have better two handed power. He displayed it against older, somewhat shopworn opponents. I concede his left had more KO pop than Joe's right carried. To call Joe a one handed fighter is dead wrong. Not accurate. His right was always in the mix and he had coordination. Double hooks, under and over, over and under. Right to the body, right uppercut. Joe Bugner learned this as did Jerry Quarry in their rematch.