They should have also ran some tests with an ATI card as well. ATI's driver support
is spot on, even in Windows 7. Wanna bet some of the results would have been different?
I'm currently tesing my LAN rig with Windows 7, and I am seeing higher frame rates with
Windows 7 x64. I must admit though, the GPU driver is newer, but still, compare these results...
Vista x86 7 x64
Of course, you really can't directly compare a 32-bit OS to a 64-bit one like that, but I just wanted to illustrate my point.
Same hardware, but the performance difference there is substantial.