The 4 set for unholy is pretty meh, the 4 set for Frost is 3%ish single target, not bad at all.
Though I don't know how great it is for 2h, the 4 pc for DW is pretty great. Obviously there was a mistake with the initial sim of it, but it's pulling about 3% of our damage, and the way it's activated is the perfect time for it's use (mostly).
I personally didn't realize Unholy's 4 PC was that bad. Even spamming Death Coils while Dark Transformation doesn't make it powerful?