I don't think that was ever in question; but instead, whether, at this point, specifically INT was giving any sort of magic attack bonus to Dark Magic spells, since it appears to grant some minute magic accuracy but makes an unnoticeable difference to Drain/Aspir/Absorb-TP damage, though logic says it should (since it gives attack bonuses to enfeebling and elemental black magic spells)...
Edit:
Oh and as far as
these things go, I'd much rather have 10(11) Dark Magic Skill from w.hands or 7 and INT+9 from Abyss Gauntlets +1 on my hands than a (likely) awful set bonus. For a BLM, there are also a number of better alternatives. DRK get screwed in the feet category as far as Dark Magic, Magic Accuracy, Magic Attack Bonus, and INT go (
these are severely time- dependent, so they suck and I'm forced into
this garbage on the off chance it's making a difference). It's nice to see a "set" that only requires 2 pieces, but set bonuses as a whole are just

...