FPS on a console?..
Don't want to sound like a prick, but something like Unreal was designed with mouse and keyboard controls first and i can't even imagine how awful and slow it is with dual analog controls.
Having said that, i know that UTIII on PS3 supports USB keyboard and mouse, so please check it out if you can... Unfortunately that doesn't fix that UTIII is a bad Unreal game (bought it FULL price way back, was so disappointed)...
UT99 and UT2004 were a blast. Both run on toasters nowadays, i highly recommend to check out free demo of either UT2004 or even UT2003 to see how it was meant to be played.