well it's true - that's what I've heard. again, I was just asking of those two cards specifically which is better - not NVIDIA VS AMD FIGHT FIGHT FIGHT. i was under the impression that AMD did not integrate well with intel.
so - which gpu is better? 
The ATI is better, not by a lot, but well worth the price.
Especially at higher resolutions.
However, the Nvidia is better if you plan on overclocking, as you can go past GTX 570 speeds if you overclock enough.
Luckily, that card has a great heatsink. So, in the end, if you have the time and patience to overclock then you could get good results. If you just want a good stock performance card get a 6950. Really, either one will be good. Hell, a 6870 would be good too, only 5 FPS slower than a GTX 560 Ti and 6950, that too when it's already running over 40FPS.