I read an article by Charles Farrell, a former boxing manager, who believes Listin to be the greatest heavyweight in history. But he was so mob connected and threw so many fights (including both Ali fights) that we’ll never know how good he really was.
If you look at Cosell's critique of the fight where Liston could have thrown a punch but didn't he couldn't believe it. Neither could I.
Liston's biggest problem, he wasn't as pretty as Cassius.