the Pro XL is targeted towards very big, advanced riders The Converse is for mid sized riders who are progressing from a beginner board to their first surf shape.
I would expect the converse to be more stable with the added width and wider nose.
Thanks! Actally I'm on a JP Surf pro 8.10 126l. Looking for a second board for choppy days. Thought about the pocket rocket or converse (widepoint is to width I think). But for small waves entry should be the converse better