Mon Nov 11, 2013 9:26 am by Ryeballs
From what I can tell Boarbarian is severely limited in the new moves that he can learn. That means early on Boarbarian is better given it's diverse moveset, but once you reach a point where you are outfitting Epic monsters with Advanced Skills Boarbarian will fall far behind and become useless mid-end game.
So my vote is to plan on Flight to be your Epic Physical monster to take you from mid to end game.
That said, if you have both, I would keep Boarbarian on your main team until you have a stable of assorted Epic monsters who exceed him before switching your attention to Flight.