So if a lot of the Devs use AMD cards WHY was the decision to use gameworks made?

I just find it odd that you announce making the game for the ps4 and also announce nvidia gameworks but a dev also said that many of you have amd cards, this just seems so damn awkward reading about. Team a bunch of masochists?:D



Did Nvidia throw money at you to use it or something? I can only hope I and other amd users don't get shafted on effects or graphics because of gameworks.