Voted Napoles by KO, because he is one of my all-time favorites. Though I suspect I'm voting with my heart.
Presumably a 15 rounder, and whilst Roberto did not particularly like to have to go looking for shifty opporsition, of which Jose no doubt qualifies, i doubt if Jose was at his best at this weight, was he not perhaps a little frail when compared to the full throttle Duran who improved to the extent he could twice take out a talent like Esteban Dejusus, At Welter, against the Montreal Duran, Jose would be no more than 50-50 i feel, Cuts could be a big Factor, all things combined, Jose's best chance against Duran might actually be at Jr Welter.. At lightweight ..over 15 rounds...i really have some misgivings as to whether he could contain Hands of Stone, backed by that Mentality to destroy. I'd go for Roberto perhaps a late rounds catch-up
Duran takes this on cuts. I hate to project fantasy outcomes on occurrences like this, but Roberto would be inside with his hands, head, elbows and shoulders, while Mantequilla wouldn't exactly be running away from the battle.
