Whenever I read of todays fighters vs yesteryear, there IMO is usually a lopsided argument.

Guys like Floyd are scrutinized with a meticulous microscopic glass; but when we look at guys like SRR to Ali, serious; how many different styles were there for them to go up against?

Clay/Ali fought Patterson (But he was a CW @ best and on the downside was he not?)
Cleveland Williams-- but wasn't this after serious medical issues from Williams & on the downside?
Frazier never fought more than 40 times & retired- bounced like a ball by Foreman, so what made Frazier great? It damn sure wasn't longevity.
Norton? Dude won the title by vacancy and lost it to Ali's sparring partner in his first defence. He won a Spit decison with Cobb? really? and got his azz KO'd by Shavers & Cooney.
Foreman was in a death match with Ron Lyle (we enjoyed it,) but was that really an accomplishment? or just a good ass fight for us fans to remember? Jimmy Young outboxed him, dropped him:he quit. Forman saw the lord so he quit!

Yet history makes it seem like who Ali fought was great with (oh back in the day the greats all fought each other..)
Well there wasn't PPV- closed circuit hadn't come out, if it did, do we really expect they would have been different than today's fighters?