These kind of threads are interesting to a point as i believe a lot of opinions are based on their dislike of Ali personally. With that being said, every era has it's Champions and also rans, Ali in the 60's made his oponents look like fools, does this make them all poor opposition? ( Remember people were saying Liston was Invincible at the time) Patterson was a two time champ and yet Ali beat them easily!
In the 70's big George was going to reign for ten years, he was a monster that could not be stopped and what happened Ali beat him! Tyson in the 80's will be HW champ forever they all said until a big lug called Buster Douglas came along and turned out the lights!
It is impossible to compare era's in the HW division as we now have fighters weighing in at over 240- 250lbs.
IMO there should be a Super HW division! 240lb and over.