Judah isn't a fighter with A+ level ability but no stamina at all. He is a A-/B+ level fighter with C level focus, stamina and desire - every big fight he has had, he lost :deal He could have had a lot more, but attitude problems can effect elite level athletes, and it has certainly affected our Zab.
If Kostya was able to humiliate poor Zab, Duran would kill his ass during the weigh in. It would be similar to the Davey Moore outcome.
Judah doesnt have the punch resistance or the chin that Leonard had. Duran takes this one...tho I see Zab being effective early and fading...as usual.