Job balancing?

[Helldemon]

Ambuscade--the dragon and the taurus/demon--seem like a pity-gift to melee. Due to rotating weakness on dragon and pretty high m.eva on taurus/demon especially once they leveled up after the other died, they're best suited for melee.

Are they that bad? I knew groups that did VD for both with MB setups in under 5 minutes.