who where the most physically strong boxers for each weight class?

..carnera was noted for his sheer physical strengh....but when he tried to bull joe louis around louis picked him up off the floor and set him down again.this is well verified by several observers. one sportswriter felt that was a big factor in carnera's defeat. brave as always, and he took a fearsome beating by the bomber but at that first test of strength carnera surely knew his greatest asset was more than matched.