That’s all well and good but his weight alone is hardly an indication of one punch knockout power. I’m sure he hit hard but I’d hardly compare him to some of the heavier hitters in heavyweight history. Keep in mind Joe Frazier almost never jabbed, so the vast majority of his workrate was power shots, which are more draining than jabs. We also saw Chisora gassing out against Dillon whyte. This is the same dude who got dominated by Kubrat Pulev in their first fight. He isn’t even that good of a pressure fighter.