how do you rate vitali's one punch ko power ?

I think he has seriously heavy hands, he seems to graze people and hurt them. Thing is his technique is not great, he doesn't really have an explosive punching technique, like his brother or those other fighters you mention, he doesn't have that kind of speed either. But he has naturally heavy hands, I think he carried Adamek to be honest, didn't want a first round ko again like last time. With this said I think Vitali and Wlad both have a lot of Ko's against lower caliber fighters, a lot of these guys they face aren't conditioned well enough. So maybe if they fought in a more competitive era they wouldn't have so many KO's. One dream match I would love to have seen is Prime Vitali vs Prime Foreman, brutal is not even close to describing that fight.

He rarely fully commits to a punch. When he does land flush with his body weight behind him, it is usually devastating. Most of the time he hurts his opponents with arm punches, or glancing blows. He is plenty heavy-handed, imo. this^.....

He rarely fully commits to a punch. When he does land flush with his body weight behind him, it is usually devastating. Most of the time he hurts his opponents with arm punches, or glancing blows. He is plenty heavy-handed, imo.