MCH falls into the same category. The developers (for whatever reason) consider the MP and TP regen abilities of the two classes to be different from the utility-type stuff that other classes have. Army's Paeon and Promoted Rook are AoE whereas Goad is not (up until recently, BRD/MCH had the only option for AoE TP regen, in fact--AST can now provide this as well, but on a pretty limited and random basis). BRD/MCH also have the only way to provide Magic Vulnerability (Foe Requiem and Hypercharged Bishop).

Whether or not that's enough to warrant their DPS deficit, I don't know. Personally, I'm of the opinion that their DPS should be higher with Wanderer's Minuet/Gauss Barrel active than it is now (probably another 10% or so, but that's just a gut number).