At 2560x1600, the GTX 670 averaged 31fps in Aliens vs. Predator, or 3% (1fps) slower than the GTX 680 and older GTX 580. It was also 6% behind the HD 7950 and 16% below the 7970.
The GTX 670 averaged 40fps at 2560x1600 in Metro 2033, matching the HD 7950 and ranking just 5% lower than the HD 7970 and GTX 680.