Its untrue that Floyd struggles with Southpaws, he's dominated quite a few Southpaws Mitchell, Judah, Ortiz, Guerrero and of course Pacquaio
Floyd has his hardest fights with guys that put pressure on and throw 100's of punches (Castillo, Delahoya, Cotto and Maidana) none of which were southpaws
I like Conor but if he fights his usual counter punching style he's just going to get wrecked by a guy levels above him.
Actually he will get wrecked any way but he has slightly more chance going balls to the wall.
I'm predicting a stoppage probably quite early maybe 6-8 rounds