DMG set up

[KRose]

I quite often out-damage supposed DD's in my party with such a setup.

What kind of damage are you pulling with it to make that claim? Victimize II, Chaos Thrust, Simian Thrash, Doomspike II and Storm's Path all do silly damage. Mind you, Victimize II is on a 60sec cooldown, but Keen Flurry fixes that easy. And doesn't Riot Blade lock weaponskills for 30seconds? That's a fairly long time to go without being able to execute another weaponskill unless the damage is absurd. Is there even another weaponskill that's viable to use? The others seem kinda eh.

I've never seen a GLA DD in setups since 1.19 rolled in but I'd assume STR/ATK with Accuracy+ if you're having problems. Weaponskills now have the ability to score criticals fairly frequently so +crit damage and Murderous Intent are nice if you have MRD leveled up. You should probably look at it more like a "Oh well if we have a MRD spamming Storm's Path then I'm gonna DD." rather than a "I'm gonna try to out DD the other DoW!"

Gear choices shouldn't be too difficult though. You should basically play off your strengths and go from there. Like you can add +ATK or +ACC to your hand slot but there's no reason to add the +ACC materia if you aren't missing.