Old, nearly dead thread, yeah kinda a necrobump but i tossed on some MAB gear on my whm/rdm (90/45) And loaded some mnd in open slots and hoofed it out to west ronfraure to see some unresisted nukes, it was dissapointing but not totally aweful, but MAB is not the only factor in the situation.
Gear is Apollo's staff, staff strap, incantor stone, artemis' medal, moldavite earing, hecate's earing, Twilight cloak, Eradico mitts, Diamond ring (+2 mnd aug), Star ring, Searing Cape, Penitent's rope, Jet Seraweels, Blessed Pumps.
Overall, 86+23Mnd (109 mnd), Skill of 287 (dont get a lot of demand to cast banish/flash/holy/repose in abyssea...)
and at the time of this test, it is darksday, with moonphase of Waxing Gibbous (64%), with all that in mind, i am nearly at 50 MAB in gear. I will conduct 10 casts of each spell on single target rabbits near the gate. I do NOT have signet either.
Banish; 109, 122, 109, 122, 122, 122, 109, 122, 122, 122. So its likely to cap at 122 damage with my current MAB, darksday lowering it to 109 on proc.
Banish II; 325, 362, 362, 362, 362, 325, 362, 362, 325, 362. Again, cap at 362 damage, lowered to 325 on darksday proc.
Banish III; 678, 609, 664, 678, 678, 609, 678, 678, 678, 678. 678 cap, 609 due to darksday, and i assume the 664 is eithe a darksday proc + magic crit, or a partial resist/miss...
Now with holy, ill do atleast 2 with cures prior and solace up, the rest, just with regular nukes.
Holy; (871 cure)621, 394, 440, 394, 440, 440, 394, 440, 440, (968 cure)686. So 440 cap, 394 with darksday, and gives about 188-20% damage from the cure to overhead damage i estemate.
Anyway, this is outside abyssea, hope this shows out the potency (or lack there of) that banish and holy spells have.