I'll never understand how the heck Rossman beat Galindez. He had a big right hand, but he was otherwise fairly limited and wasn't particularly strong or sturdy at the weight. Harding wasn't great either, but if he can withstand Rossman's right, he might be able to outhustle him to a win.
Rossman was very well schooled offensively and threw very short, accurate, powerful combinations. Both at their bests, i think he beats up the limited Harding.