Originally Posted by
Schizoide
Those numbers are accurate, but DC also scales with mastery, procs your L75 talent, stacks shadow infusion, and doesn't have AI issues. So it's not immediately obvious.
In T14H gear simcraft predicts a 4.2% total performance loss skipping the gargoyle entirely. This does assume that its AI works, though.
To look at scaling, I added mastery to the T14H profile. At +2000 mastery, skipping gargoyle was a 4.1% performance loss. Even at +4000 mastery, it's still a 3.9% loss. We won't get more than 4000 mastery over T14H gear in this expansion, particularly since unholy doesn't reforge to it.