Gargoyle Stoneplate on Cho'Gath is Hilarious

So i was doing 3's with some lower level friends last night and got placed against a few lower ranked players, which allowed me to try out the hilariousness that is Gargoyle on Cho. I just want to say now, the reduced damage not affecting his ult is hilarious. I was bumping myself up to roughly 21000 health, and flash ulting the enemy tank warwick (he had about 3200 health) every teamfight 1 shotting him at max health. As fun as this item is on him, i'm actually hoping it gets nerfed soon, because i would hate to get flashed ulted on by a Cho in the future every teamfight. My build that game (it's really stupid don't laugh) was Rod of Ages, Thornmail (for countering), Gargoyle, and 3 Warmog's + tank elixir. I believe i was around 20-25 stacks of Feast.