Was Marciano a one punch KO artist.

No, what you posted doesn't prove your premise, which was the point.

 

No but he wasn't taken out and he ended the fight on his feet.

"Trying to knock the challenger out with one punch, the 29-year-old Marciano was over-eager and awkward. He lunged, butted, hit below the belt, on the break and after the bell. Once, he swung so wildly that he missed and slipped clumsily to the canvas. Outboxing the champion and avoiding his blows, LaStarza managed to win four of the first six rounds. In the seventh, Marciano changed his tactics, started aiming at LaStarza's body as well as his head in an attempt to wear the challenger down. He succeeded." I rest my case.

 

My premise was that Golovkin hits as hard as heavyweights.

3 of his sparring partners who have faced heavyweights agree.

It's not proof, but common sense goes a long way.

 

My case is equally rested.

 

I actually really like this post.

 

Joolian had half as much success so I would prefer to be Rocky, look the man hit like the space shuttle but it had to land clean because he wasn't huge and heavy like Foreman who just had to glance a temple and it was all over. Fact is he won many fights with one punch.. sure he used attrition because many of the guys he fought were slicker and quicker on their feet so Rocky had to be patient but one opening and he finished many with a single shot.

 

OK so we are talking about just one guy then ???? I knew there had to be a Jimmy Thunder thread somewhere, the only guy I really ever heard of who threw one punch the whole fight and won in a few seconds.... ridiculous assumption you make there... if a punch is a single blow it doesn't matter when it scores.... that punch would have knocked Walcott out even if it was Rocky's first punch.... no way was Walcott looking like going out cold until that shot.