I have the legendary Bracers and shoulders.
once i get legendary Belt or mini-lust ring im going back to the Suramar 2 set, shoulders at this point should just be a passive aura your Dark transformation gives to any additional army/gargoyles you may have up.
the shoulders have been a let down but it still is a hefty amount of STR.
Got these earlier today, and as far as I can tell, they provide nearly no dps increase at all (had 870 shoulders with better stats). Should I be using Dark Arbiter? I haven't simmed yet, but from what hitting the training dummies tells me, my dmg is the same.
the shoulders buff
Apocalypse ghouls
Dark Arbiter
AoTD Ghouls
Pot -> Outbreak -> gargoyle ->FS-FS-(FS) -> Soul Reaper -> DC -> Apoc - Dark Transformation (buffs all minnions, gargoyle will still have 29-31 seconds left)