I can see a case of either Monzon landing the better and heavier shots but Calzaghe winning a narrow SD on the scorecards because of his workrate, or Monzon by late TKO.
While I lean more towards Monzon SD,calslappy taking it by a pretty narrow decision is also quite acceptable, Monzon was more about how he gets the job done with the least effort while Calzaghe puts his everything.
Although I agree that Monzon's methodical approach could look kinda leisurely at times; that is not the whole story. During a fight Monzon usually would run at a regular pace in order to sustain his trademark aggresiveness up to the very last round. But when it was required he was perfectly able to pick up speed and adjust his work rate. I am confident Monzon would be able to match Calzaghe's intensity punch by punch. Monzon UD and maybe even a late stoppage.
I´m one of the few guys around here that fail to see the greateness in Monzón. But he could make Calzaghe´s workrate go down pretty well with those well timed power jabs like he did with Nino... when Nino tried to come in with his combinations Monzón put 1 well timed jab to stop him in his tracks... Calzaghe´s had little to offer in ring generalship and Monzón would make him harmless...
Another thing that I thought hindered Monzon's possible higher work rate is his right hand,dudes a savage man,fought with one hand hurt on painkillers every fight and still became ATG.
That is it in a nutshell. Calzaghe would be the bigger man in the ring, but he won't be able to physically impose or intimidate Carlos.
Close fight but Joe matches Carlos in size and had faster hands and solid work rate. Monzon was consistent for 15 rds. at a steady pace. I think Joe was very strong for 12 so 15 should not be a problem. Monzon had a very good right hand and applied pressure, but Joe has power and speed and movement. Joe Calzaghe by close UD 115-113
I have no doubt at all. Monzon usually looked fresh as a daisy at the end of fights, certainly in the big scheme of things. In short, he had untapped reserves and nobody seemed to be able to make him tap into them. That's huge, and a story in itself.