Neither hearns chin or stamina cost him in either of those 2 fights.....he took a hell of a shot(s) in both fights...
If Hearn's fights a disciplined fight, stay behind that jab and don't open up to much over 12 rounds its a pick-em fight. If Hearns gets to brave then it turns into a typical Monzon performance - dominant distance with the jab, start adding the mean right hand and just systemically beating someone down. Monzon has to be the favorite here probably 3:1.
I see it sort of the same. If Monzon attacks a bit more, I'd favor him, assuming his chin can weather Tommy's power as Hagler's did. But if he fights a more controlled, distance fight, Tommy could win.
I split the difference between you and scarecrow. I don't think Hagler was as hurt as some people think by that right early in the 1st round. But on the same token, you seem to neglect the fact that Hearns clearly had hand problems and could no longer snap his rights midway through the 1st round. You didn't have to even learn the official injury report after the fight; I could transparently see something was wrong during the fight.
Exactamundo. Really, we should get off this notion that Tommy was a "great boxer." Just like Roy Jones and possibly Ali, Tommy tended to out-box folks, because of his unusual physical gifts - in his case, outrageous reach above all. (Conversely, some folks who are superb technical boxers don't get noted for it, because of their physical shortcomings cost them decisions - especially the slower guys like Arguello, for example.)
Arguello was technically near-perfect; but less technically sound guys could out-box him, because Arguello had relatively slow hands and feet - and was a bit too textbook and hence predictable. A good illustration is the first Pryor fight. I hear a lot of folks claim that Pryor "out-boxed" Arguello, because he was "the better boxer," but I didn't see it that way. Pryor just had far quicker hands and was a bit unorthodox in his approach, so he had the better of the fight from the distance - in spite of Arguello's superior technical ability and reach.
Ok, i'm hearing you. I guess on some scale handspeed needs to be factored in because if you are slow as molasses all the technique in the world isn't going to help you. Arguello's superb timing and countering helped him get away with average handspeed against the vast majority. His excellent technique too of course.
If even Mancini is out-boxing you - much less Olivares or Marcel - then technique isn't helping you much!