Re: Did I miss something?
What graphs are you looking at? In the Anandtech review, I see the GTX 580 SLI still beating the 6970 XFire at 2560x1600 and 1920x1200 in Crysis Warhead. Only in the minimum framerate for 1920x1200 is the 6970 XFire better than 580 SLI.
For Metro 2033, the 580 SLI loses to the 6970 XFire at 2560x1600, but then that graph also shows the 5870 XFire beating the 580 SLI as well, so I'm going to say its both a combination of the higher VRAM on the 6970 as well as AMD optimizing the hell out of their drivers for Metro 2033.
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