Who would have had a better chance at victory? Cervantes if Duran had gone to 140. Or Tszyu if Mosley had gone to 140.
To answer my own question, I think Cervantes would have given Duran a tough fight (though in a losing effort) whereas Mosley probably would have wiped out Tszyu in a non-competitive fight.
Both Cervantes and Tszyu would lose but Cervantes has just a slightly better chance. It would have been a great fight between Duran and Cervantes but Cervantes will eventually get stopped after putting up a valiant effort.