honestly it will be way better than quadro4...i know this because i have a quadro 4 980XGL @ my work and it isn't THAT much difference to the GeForce4 Ti 4600, that i have in my PC at home.
Anyway QuadroFX has already been anounced.......and i think it won't be much different from the "normal" GeForceFX.....it's just a driver thing goin on in this nvidia's marketing manouver