Agree 100% with the above analysis. FOTC Frazier by late round (12th-15th) KO or stoppage. Joe's intense work rate and punishing body attack would wear Holmes down. (FOTC Ali was better than Holmes at his best--tougher, stronger, and faster. If that version of Ali couldn't stop Joe no way would Holmes survive Frazier's constant pressure!!)
I analyzed Holmes-Cobb (Larry's peak performance in my regard) on mute very carefully, have Flash Gordon's extremely positive anti Cosell review of that Championship Distance bout from Tonight's Boxing Program (which I'm in complete agreement with), and I just don't see Frazier getting close enough often enough to pull off a decision win. (The Frazier I'm considering is his absolute three bout pre ankle fracture peak lasting from Jerry Quarry ! to Jimmy Ellis I, BTW.) Holmes wasn't that susceptible to the left hook, didn't lay on the ropes, and had that deadly right uppercut he knocked Weaver senseless with. Larry had the necessary power to swell up Joe's face as Ali did in Manila, and he wouldn't try hooking with a hooker. What I see is Holmes via close but not controversial UD 15. (FWIW, I have Frazier as a top five ATG HW, Holmes as a top three.)
I could watch Frazier-Ellis & arrive at the same conclusion for Frazier. Anyone’s guess which would be fairer.
There was certainly significant intrigue going into Frazier-Ellis I. Jimmy had bombed down an onrushing Bonavena with a left hook and also a right cross. Both shots seriously stunned Ringo, and it seemed Joe could run into those same shots.
Cobb and Frazier are poles further apart than Ellis and Holmes and there's a fair bit of difference between Ellis and Holmes. Cobb is a tough stand up face first plodder with not much of a left hook at all and ordinary power. Holmes vs a punching bag would be almost as relevant. Sorry Anubis, i'm not trying to pick on you, i quite like you mate.
The difference between stopping Witherspoon and those guys is the style they employed. Frazier got his weight over his lead foot a lot, bobbed into uppercuts etc. Larry H could time him a lot easier using his momentum against him - would he? I don’t know, I don’t know if he’d even win - but it wouldn’t surprise me if JF got caught with a right uppercut and it meant curtains.
The problem with this fight is you probably could not find two guys with less "Dog" in them. For as much stick as I give Holmes for the most risk-avoidant championship reign in history, there is absolutely no questioning his heart or willingness to fight to the death. And we already know Frazier's willingness to do so. So whatever outcome that is envisioned would have to factor in an unusual level of attrition and risk to win. Nobody would be getting out of this fight unmarked and the results would be necessarily dramatic.