All this proves one theory of mine, Nvidia believe in using tessellation as a distinctive feature in DX11 from their rivals. Without heavy tessellation "tessellation in Heaven is very heavy" there is a chance that 5870 2GB comes close to GTX 480's performance.

I think Nvidia will make a huge deal about tessellation and most TWIMTBP games will include heavy tessellation effects that ATi cards just cant work with.