Where is the war?
If they split the pie, all to avoid coinciding in their releases, one comes out 6 months before and then the other, so the cards don't drop in price.
The thing with those shaders, well, we'll see, because it's been many times that if Dx10.1 would be incredible and it was worth nothing, then Dx11 that if one wouldn't have hardware tessellation, then we moved to Mantle and some German said up to 600%, I don't know what he smoked, the draw calls and now it seems that it's the SA's turn so until I see it I don't believe it, because it's been many times.
For my part, I wish things would change a bit and they would really compete because right now they are both making fun of us, I think they are more in cahoots than they try to appear.