Floyd was 1 of the best I've seen at getting inside amazingly quickly and landing super fast power punches. A Dempsey-Willard style demolition where the far faster powerful smaller man takes out the much bigger slower fighter. Although I'd expect Patteron to box more. Floyd beat plenty of big punchers like Bonevenna, Quarrey, Johanssen, Moore, Cooper. Was Carnera better offensively than all of those? Ali was a big guy who didn't put Patterson away too easily - did Carnera have a better arsenal than Alis (who doesnt have the most dangerous arsenal ever but it is pretty underated)
This is a big part of the younger Patterson, he was always launching leaping attacks leaving himself wide open and off balance. His chin isn't as bad as some claim
I know that Patterson was very quick at coming inside, but Carnera had a good jab, compared with his 34-reach it´s a dangerous combination. And Carnera´s chin is underrated, lot of people still say he was chinny and so on, but that´s absolutely not true. In his prime (or near) he was only KO´d by 2 of the greatest punchers ever, in Baer and Louis. Patterson had also power, but not in their league, so I don´t see a Patterson- KO. Primo on the other side, had enough one-punch- power to KO big guys with good chins like Bearcat Wright, Sharkey, Campolo, Neusel, etc., so a Carnera-KO wouldn´t be that surprising...
Ali was much smaller than Carnera, and had a total another style, you can´t compare them, I know that Ali´s jab was better than Carnera´s, but style-wise that matchup wouldn´t be so good for Floyd.
We can´t really judge the the Sonny-fight, because Liston KO´d him twice in the 1st round. Don´t forget, to avoid always jabs when you´re so much smaller is very arduous, I don´t know if he could do that for 15 rounds.
To be honest this is a pick em fight. If people atribute general superiority of one era over another they are missing most of the picture. If a guy is a top fighter in one era he will be a handfull in any era because every man has a chin. I can see Patterson outboxing and outpointin Carnera while looking like a midget on the inside, and I can see him being knocked out or outpointed himself.