[_Kharbon_]

The reason why many players choose to call warjurers the most OP class in the game (and I do agree with them for the most part) is their immerse defence. Mind blank prevents warlock's cc chain as a charm, karma mirror and steel skin, combined with self-heal, give you great defence against ranged, and the mental tree gives you protection against meele.
Damage is a bit of an issue, I guess, but with decent staff, summon and high-lvl mentals, it should be decent.