Our quality tests with FSAA and anisotropic filtering were run both in Direct 3D (UT2003) and OpenGL (Jedi Knight II). It turned out that NVIDIA cards are much faster with anisotropic filtering enabled in OpenGL than in Direct 3D. The Matrox Parhelia was tested with 16x fragment AA and the highest available anistropic filtering level, 2X. The SIS Xabre 600 does not support anisotropic filtering, so, obviously there are no results for that test. The Radeon 900 boards would consistently crash in UT 2003 at 4x FSAA.
*Matrox Parhelia using 16x fragment AA