Balthier is utter bulltrout in WotL in how utterly broken he is. Giving him better versions of all the thief skills, all of Mustadio's skills, his equipment pool from FFXII, Barrage from FFV, and then starting him off with one of the best pieces of light armor in the game that gives a huge speed boost, and giving him a suped up gun. It is pretty clear that the Ivalice team loves the man. He was no slouch in Revenant Wings either.