if cotto were to meet castillo at 147 because we know that he has trouble making 140. I beilieve that castillo would outbox him and maybe even tko him. castillo is one of the most underated fighters today and i just dont think that cotto would have any answers to his superb boxing skill. Cotto is too green for any top welters except hatton at 147 i think he would have good chance against him.