Best Job / Class for AoE Killing lvl 45+ Mobs

[Zell]

BLM, since you dont have SMN.

I say BLM, taking into account longevity, as physical classes can run out of TP spamming AOEs, and WHM can run out of MP if you're endlessly AOE chaining.

BLM does good damage and has infinite MP.

Is SMN better than WHM or BLM... if so, why is that?