Oscar's face looked pretty messed up against Whitaker and Quartey, but he won both of those fights, which I still consider gifts. Same thing goes for Felix Sturm. Oscar didn't look like the Golden Boy after than fight as well.
I wouldn't think too much of his face being banged up. Sometimes guys just get banged up from a certain punch or clash of heads or whatnot. For instance, De La Hoya looked worse off after fighting Gonzalez than he did against guys like Mosley, Vargas, and Sturm. He took more punishment in those fights than he did against Gonzalez.