Prime for prime Tunney beats Greb he added experience, weight, and strength ,as he matured. Loughran was 19 and 20 when Greb beat him I believe.
Not for me .. Tunney already had 49 fights , Greb had well over 200 … Greb gets the shopworn argument before Tunney gets the pre prime arguement
Maybe...If Greb had the eye problem there more likely. But Tunney just "outgrew" Greb according to the latter. They would not be matched today during their later fights. He added more muscle to go with his height & length advantages. Even w/a swarmer over boxer advantage, that likely would be too much to overcome.
since I never saw Greb, it's a difficult one to pick. I'll lean towards Monzon. I'd lean towards Hagler too. And I wouldn't rule out Canelo or GGG. That might change if ( when) we finally see actual footage of Greb.