Can someone explain the benchmark log file results and how to interpret them?

I'm experimenting with my ATI Radeon 9500 Pro AA and AF settings to see what the best graphics quality and performance settings are for me. I read all the test articles about what brand graphics card is faster than the other using AA and AF settings. I know that UT2003 is a DirectX 8 game and UT2004 uses DirectX 9.

What I want to know is with UT2003 how can I tell if AA/AF settings is faster than non-AA/AF settings? Until UT2004 comes out and my ATI card can use DirectX 9 with the game I don't know if using AA/AF now with UT2003 will lower my framerate or not compare to using standard non-AA/AF settings.

I mean is using standard Direct3D graphic card settings (in a non-DirectX 9 game) always going to be faster than using the same resolution under AA/AF settings?