Gonzales is great. His only problem is having lower accuracy than others in a game where weapons generally have lower hit rates and enemies have avoid unlike the games most people are used to (FE7, FE8, FE9). He doubles most enemies and can kill some of them in one of his 2 hits, specially when he's a Berserker.
I find his level 5 version one of the easiest units to use.
Accuracy doesn't matter if he can critical most of the time B)