How about prime Joe Frazier vs prime Mike Tyson?

Frazier TKO 6th Round
Tyson would become intimidated after hitting Frazier with the kitchen sink and not putting him down. Frazier would eventually finish him with the left hook.

 

No. 9-6 if you're being generous.

 

Ah c'mon, he only bit off part...of a single ear!
More seriously, Tyson did not do those things during his prime.
The critiques of him are mostly justified.
He was dominant enough in his prime that he was not tested the same way, but no indication that he would do those same things before his decline.

With Frazier's style I think it more likely Tyson gets him early.
But of course if it went long, Joe might well outlast & wear Mike down.

 

Of course Tyson drops him several times and then stops him. Frazier has no quit but his style and lack of athletecism compared to Tyson would end this fight.