Thanks for the benchmarks but every other benchmark test I've seen on the internet has said that 6950 outperforms 560 Ti, and especially in Xfire. Also, (Tom's hardware said) it performs almost on par with the 6990 which is around $750.
here is a hierarchy chart for all cards...
http://www.tomshardware.com/charts/2011-gaming-graphics-charts/3DMark11-Enthusiast,2660.html
I mean yes, they aren't the best but they are the best for the money. Especially since I don't want to spend $200 more dollars to get a 5 framerate boost. or spend $500 more and get a 10-15 framerate boost when these 2 cards will play a game at 80Fps (for example) already. Why would I even need to play it at 95, for an extra $500? I'm looking for is to get the most graphically demanding games that I play to at least 60fps, and these cards will do just fine.
However I would like to implement PhysX for the extra beauty. And I've seen the guides to do it but they are all over a year old with (currently) outdated cards (At least from what I've found).