I think Marciano would eventually find Ali over 15 rounds

[Mars_ax]

Ali had problems with just about everybody, same like Holmes. Ali was rocked by just about every opponent--Doug Jones won the fight, Cooper and another guy floored him, Chuck Wepner floored ahim and went 15 rounds, Chuvalo beat him on pionts, Ken Norton won all 3 fights, Bob Foster cut him, Frazier was wining the 3rd fight if his eyes didnt close, Ali would get waxed in a rematch with Foreman who could probably beat Ali just using his jab and conserving his energy better than Zaire, an old Patterson was "the toughest fight I ever had" said Ali himself. Frazier really showed in the first fight that Ali was only great for his Iron Chin and not much else as Ali's fucking head in that fight should have come off his shoulders on dozens of occasions due to monster left hooks that should have decapitated him. Ali proved he could take any punch from anybody and still fight on. Just that he didnt do too much fightin after Frazier took his head off in the mid to late rounds.

Ali struggled with everybody. Name a fight Ali didnt have a scare or get hurt bad.

Marciano would destroy Ali.

Looking at this analysis Ali is the worst Heavyweight champion of all time and probably wouldn't have beaten Marvin Hart! We should all stop talking about Ali and condemn his legacy to the dustbin of time and erase his memory from boxing altogether? I was unaware that so many people over the last 50 years have got it all wrong about Ali, i better go read a book about boxing because i have no idea now.

I watched Ali/Clay almost from his 1st fight as a Pro, in Ali's Prime which would have to have been before the 3 1/2 year lay off for draft evasion he was the most physically gifted HW who ever lived. He had a rare combination of ring smarts, skill, speed, power, endurance, and a defense that was better then Mayweather's. In short, in Ali's Championship "prime", Marciano and Frazier wouldn't have stood a chance, and neither would few other Heavyweights in the History of boxing.

Perhaps some of you base your opinions on the version of Ali after the 3 1/2 year lay off, and/or the one who lost to Frazier in their first fight, but before being stripped of his title Ali was unbeatable.