How Ali could take Foremans shots but not Frazıers so well?

[El Kabong]

I would argue that it was a matter of simple momentum...Frazier snapped his left hook, George rared back and launched his...it could be a matter of Ali being better able to time George's shots, but what does that then say about Frazier who 2 of the 3 times Ali fought him was a 1 armed fighter. Smokin' Joe ONLY had the left hook so Ali and everyone else knew where the power was coming from....just goes to show you what a brutal and devistating punch it actually was.

Joe Frazier had one of the best left hooks in boxing history....right up there with Joe Louis, Rocky Marciano, and Mike Tyson.

[johnsebastianmiran]

Joe was strong for his smaller stature but he did not have as far to travel with his hooks and right hand shots. He also had smaller forearms which added to his speed but no one should ever stand still for the mummy because he was a monster back then. As a further example of power, Hagler, Hearns and Duran were perfect fighting machines with the right size forearms. Yes gents it's also a physical gift that keeps on giving.

[THE THIRD MAN]

I would argue that it was a matter of simple momentum...Frazier snapped his left hook, George rared back and launched his...it could be a matter of Ali being better able to time George's shots, but what does that then say about Frazier who 2 of the 3 times Ali fought him was a 1 armed fighter. Smokin' Joe ONLY had the left hook so Ali and everyone else knew where the power was coming from....just goes to show you what a brutal and devistating punch it actually was.

Joe Frazier had one of the best left hooks in boxing history....right up there with Joe Louis, Rocky Marciano, and Mike Tyson.

Frazier was unfortunate to fight in an era that included Ali and Foreman, Ali needed all of his skills to win against Smokin' Joe while Foreman was just all wrong for Joe. Frazier's bobbing and weaving and constant head movement made it difficult for Ali to know where Joe's shots were coming from, Ali had a lightning fast jab, he relied on it in every fight, with Frazier he just couldn't land it effectively enough to halt him except in fight 3 and that took all of 14 rounds to do.
Frazier is well underestimated as a heavyweight champion.