The chaps over at X-Bit Labs take a look at the performance of all graphics cards available in the market at a given period of time:

The Radeon X1900 XT once used to be a definite leader among Performance-Mainstream products. It used to have most advanced technical characteristics in the class, but now it is challenged by the dangerous GeForce 8800 GTS 320MB. Our tests show that the new card from Nvidia enjoys a big advantage in low resolutions, but the gap between the two shrinks from 30% to less than 15% in 1600x1200 already. It must be due to the lack of graphics memory (this GeForce has 320 megabytes of memory as opposed to the AMD card's 512 megabytes). The Radeon X1900 XT then strikes back in 1920x1200, outperforming the GeForce 8800 GTS 320MB by about 20%.

The GeForce 7950 GT cannot compete with the Radeon X1900 XT and was never meant to, actually. The Radeon X1900 XT used to be opposed by the GeForce 7900 GTX, which is currently out of production but can be still seen in shops, and is currently successfully rivaled by the GeForce 8800 GTS 320MB. Instead, the GeForce 7950 GT attacks the Radeon X1950 Pro, and indeed with some success. The speed is comfortably high in resolutions up to and including 1280x1024, which is good considering how large the scenes of Battlefield 2142 are. The GeForce 7900 GS is obviously limited by the speed of its GPU. It cannot stand competition in the Performance-Mainstream class and is not a rival to the Radeon X1950 Pro. We'll view this graphics card as belonging with the Mainstream class henceforth.

So, the GeForce 7950 GT and the Radeon X1950 Pro are practically equals if you put aside the latter's higher-quality anisotropic filtering. Considering the arrival of the GeForce 8800 GTS 320MB with its official price of $299, these graphics cards are going to move one step down, into the Mainstream category.