I don’t think he batters Ray at all and would probably think he was fighting a crowd. The speed difference would be out of this world. Marciano was 5 11 with a 67 inch reach. Robinson was 5 11 with a 73 inch reach. I’m not convinced Marciano would be able to lay a glove on him. Greb beat Tunney arguably twice along with several contending heavyweights. Greb was not a big middleweight. Ketchel was giving Johnson all he could handle and was outweighed by about 40 pounds. And what of Langford? He made a living out of fighting guys twice his size.