The competition he faced doesn't compared to Ali's?
by the way, I'm pretty newbie in Boxing. so if you want to offend me for my silly question, just go on :dance:
His resume is good, even though his best wins were against incredible fighters who were past their prime. Yes, Louis was washed up, but the other guys were still superb, if not at the absolute top of their game.
It's a size issue. Marciano fought at 187 or so. A really big skilled guy like Lewis would nuke him.