Has it even been shown which is faster yet lol Every site seems to have a different story, I've seen both the Radeon and the FX completely blow the other away on different sites Are they using different drivers?
Most likely it is due to the different builds used by 3DMARK. They have a new build that is supposed to take away some of the controversial programming built into Nvidia boards. You can read about it.
The build is called the "330". When you test an Nvidia board with 3DMark build 330, you will get a lower score than using just the regular build.

Hope that clears some of it up for you,
Chez