Looking at that Guru3d review of the SOC:
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CODMW2
SOC: 148 fps
6970: 140 fps
FC2
SOC: 97 fps
6970: 83 fps
Anno 1404
SOC: 80 fps
6970: 85 fps
Crysis WH
SOC: 55 fps
6970: 57 fps
Metro
SOC: 27 fps
6970: 28 fps
Dirt 2
SOC: 79 fps
6970: 77 fps
BFBC2
SOC: 56 fps
6970: 56 fps
Avg. fps
SOC: 77 fps
6970: 75 fps
Vantage
SOC: 21,953
6970: 21,419
I bet many would not have predicted a win for the SOC, but it wins out by just a hair in this review. Add in it's cheaper cost (by ~$100), the fact that you don't have to do any jerry rigging to the BIOS, it's best in class cooler, PhysX, 3D Vision, excellent dual card characteristics (great scaling, quiet, and cool in SLI), I'd say you have a winner. Again, I guess that's why they are so hard to find, the SOC is a damn good card.