Louis, Ali, Marciano,Tyson All four men dominated there eras, each made significant achievements, and all four transcended the sport. But cases can be made for Jack Johnson, and John L as well.
Well it's not Lewis's fault he didn't fight a prime Bowe or Tyson, Bowe flat out ducked Lewis. And Tyson and his team paid Lewis step aside money in 1996 so they didn't have to fight. Lewis was also not soundly beaten vs Mercer, it was a very close fight that could've gone either way. Rahman had 41 stoppages in 50 wins so he had some power, Lewis got complacent which was dumb on his part. But he certain made amends in the rematch.