It was quick eyeballing, ain't got any solid way of testing it fully on the test server. Hence the ~ on it D:
Tourb just seems meh to me, not brilliant damage, and knowing SE the Def down prolly won't even land on anything worthwhile. And if Quad can only crit with job abilities than my opinion of it is even worse. A.spikes seems to do more under the influence of CA/Eff.
If you want to go get some numbers on some worthwhile NMs, go ahead. For now I'm not even gonna consider the spell.
Vapor Spray I didn't notice the poison, but it could be very weak. Didn't keep mobs alive long enough to wait for it to wear.