ATI cannot make working video drivers

[audiofreak]

This is how 16xAF looks on NVIDIA GTX 470:


If you get D3D AF Tester as I suggested above, you will be able to compare the result with your "pure awesomeness" high-end ATI video cards -- set Mipmaps to Normal and Use Checkerboard Texture slider to 2 in order to get comparable image to mine.

EDIT:
Added HD 5870 sample image, courtesy of Lukija


On HD 5xxx series you will only see a flat gray disc in the middle with those settings. Someone might say "it is better filtering" (good joke!), but even if that was the case, transitions between filtering stages should not be as abrupt and harsh as they are on ATI cards. Whatever way you put it, anisotropic filtering is broken on 5xxx series.