Ugh. Frazier by 120-108 in the first round scoring multiple KD's on his way to a controversial DQ in the 15th round.
Frazier would break his hand on Big Joe's chin. No way he's going to KO Joyce, and it's hard to not see him getting caught by Joyce. If you watch Takam vs Joyce it seems maybe Frazier win via decision, but you have to think Joyce is big enough to just rush Frazier eventually and end it. Foreman is straight up puny next to Juggernaut, so I don't think Frazier is weathering any storm.
Joyce isn't Foreman, Foreman beat Frazier but using his size to manhandle Frazier, pushing him off balance to disrupt his attacks and forcing Frazier to reset and moving him into positions where the slower Foreman could hit him. Joyce doesn't have those type of skills to replicate what Foreman did. If Takam can find Joyce's chin then I think Frazier can too and with regularity. Frazier's immense engine would also help him deal with Joyce's work rate in fact Frazier would likely out work Joyce, something Joyce probably hasn't had to ever deal with before. How does Joyce cope when it's his gas tank that being pushed to it's limits? Yes there is a big size difference but much like how Joshua against Usyk wasn't able to to utlise it, Joyce also doesn't use his size and if anything gives up his size more than Joshua does, often taking it too smaller men. ButI think Joyce has a punchers chance, he's a big man who does hit hard and he will I'm sure tag Frazier, his best chance is to stop Frazier. Frazier isn't likely stopping Joyce as Joyce seems to have a chin you could use as a bomb shelter. But I could see him out working Joyce and winning a decision as Joyce will just get caught too often trying to get to Frazier.
There's a reason we have weight classes. Joyce is a massive man and seems to have a very solid chin. Fraizer isn't exactly a slickster that is going to slip under and counter. Sure he moves his head, but he still gets hit. He'll do what Fraizer does and chug along, and he'll get clubbered down and stopped.
This implies that Frazier was a headhunter. He had great bodywork; Joyce's hips and arms would've been mush by the end of the fight.