Brown is a very good puncher in his own right and has faster hands and is a better boxer. So he should win but I don't think that he would. I think that he would see that Cuevas isn't too hard to hit and that would cause him to stay in exchanges longer than he should. That would cost him in maybe 7, 8 rounds, depending on when he gets caught clean, maybe earlier. See, Simon wasn't that hard to hit either but he would see how he could hit Cuevas, and have faith in his own punches. Instead of punching and getting out, he would hang in too long and it would cost him.
Gonna go with Brown to counter Cuevas and land cleaner, leading to a late stoppage in an all-out war.
