BoxRec

15, Hwy, who wins?

Marciano by KO. It would be a slugfest, where the tougher one would prevail.

Marciano would wear Ruddock down with body punches throughout the fight, then stopping him in 14 rounds.

Two different weight classes really. Ruddock would be too big and strong for Marciano. Razor by TKO around the 9th or 10th after Marciano gets cut up and battered badly.

The all important size "advantage".
That is how if often plays out in Mythical Fights. In the real world, a great fighter 200 or less beats a guy over 220 more than 90% of the time.

Ruddock is big and strong. Marciano is better, tougher, grittier and would keep pounding away at the body until he broke Ruddock's will.

Mike Tyson couldn't do that in 12 rounds. Ruddock stopped Dokes, Page, Bonecrusher, and in shape he's over 40 lbs heavier.

Tyson stop him 7 rounds the first time. Lewis did it in two.

Marciano did beat Charles, Walcott, Louis and Moore.

Not sure how the 40 pound weight "advantage" would play out. does Ruddock get to hit Marciano in the head with a 40-pound weight?