Don't get me wrong, my last few cards have been AMD. I am rocking a 7990, so it will effect me. Nvidia will be legally obliged to make it playable for AMD cards though and should they find it isn't they put themselves in a very dangerous position.
This is why I am not overly worried about the GameWorks program. They can't hamstring the cards beyond playability. The graphs are showing that there are some fairly decent results for certain lower level cards. Whist it is sad that AMD are blocked from it, the game is not running very badly at all it seems. The real challenge to this will come when AMD cards are not performing to an acceptable standard.
I will say though, Nvidia doing this, doesn't make me want to rush out and buy an Nvidia card any more than normal. I will pick a card which I think offers a good deal for me as a person, as and when I need it. All these things do is annoy me. I know some people will go Nvidia for it, but they have acquired a rather unsavoury reputation for these silly things now. Which may sour people from every going to the green side. They have to measure the damage caused along with the gains and I am sure in the long run, all this does precious little for increased sales.
I will always take many various things into account when I purchase hardware and I generally don't take into account the odd hamstrung game that doesn't work amazingly well, because more often than not, they are an anomaly.
So yeah, it is a slippery slope and one Nvidia definitely don't need to take anyone down, as long as games are made playable for AMD then there is no serious problem, regardless of how annoying it is that they feel the need to do so in the first place.
