Would be a hell of a mexican brawl. The outcome pretty much depend on wether Margarito is able to withstand Cuevas left hook long enough to overcome him in the middle/latter rounds
Cuevas beats him. Margarito does not have, contrary to popular opinion, a big punch and would be plodding into shots all night. I hate to bring it up, but Margarito is fuck all without his wraps.
Id pick margarito. I think his better chin, stamina and punch variety would enable him to win this, even though hed probably gets hurt a few time
Marg gets stopped. Even if he has his special gloves. Cuevas just plain and simple had too much power for guy as hittable and slow as Marg.