Yancey...
"Forgot about Leon Spinks.
Yes, the Rock should certainly be able to handle him. How many fight did Leon actually have before meeting Ali? Something like 9 or 10 as I recall. Wonder whatever happened to Leon..."
Moved to Cruiser.
"...As far as most of the other champs of the '60s and '70s, surely a prime Rocky would have a better chance if the other guy was past his prime..."
Well, of course. That's true of everyone, though, isn't it? I'm sure a peak Louis' chances would improve if he were facing a post-peak Ali, & vice-versa, yes?
"...All a matter of timing, and from that standpoint I guess Rocky would have a small window of opportunity here and there in the '60s and '70s. Haven't thought much about Patterson-Marciano, but on first thought I've got to believe Rocky takes him out..."
IMO, there is definitely a distinction to be made in his chances of making champ between the 60's & 70's --- namely, they improve quite a bit in the 60's. You had Johansson & Patterson who, between them, open a two-year timespan for Marciano (if, as you say, we take him from his peak direct to the era in question) to crush both, which he likely would. His chances against the ageing Liston who took the title & sat on it wouldn't be great, but they'd be better than against a peak Liston. He
might pull it off against this lazier version who lost to Clay. I'd give him a decent shot against the peak Ali because of styles (as I would Frazier), &, post-Ali, you have Ellis, who we agree is easy pickings. Compare that with the 70's, where Marciano's odds lengthen quite a bit, IMO.
"...In thinking about these things, I tend to think what happens prime vs prime. When you think that way, I do not see Rocky being able to prevail against Liston, Ali, Frazier, Foreman or Holmes..."
Of course, we all do. However, the question was whether he would make champ, specifically, in the 70's. Ali wasn't in his prime in the 70's, & didn't become titleist until late-74, which is why the match takes place where it does. The idea was a peak Marciano against the 70's titleists --- at whichever point in their career they were whilst holding the belt.
"...If prime Frazier was matched up against prime Rocky, I would guess that Joe would open as a slight favorite, then the fans that bet with their heart would bring it back to even money, but when fight time approached Joe would become a stronger favorite.
When Ali-Frazier I was announced the fight started out as even money as I recall, then went to 7-5 Joe and on fight night had gone to nearly 2-1 Joe."
Sorry, "odds" was a poor choice of words. To clarify, what I was seeking from you was along the lines of this --- do you think a Frazier victory is 70-30, 55-45, 80-20 likelihood, not actual betting numbers.