"Crysis 2 fully utilizes four cores and is seemingly unplayable on dual-core processors."
Unless hardcore mode is massively CPU limited - it may be, I haven't tried running it on very low res - this is absolute nonsense. I'm running this on a AMD X2 215 (2.7ghz Athlon X2 basically), with a 5570.
At least with respect to High & Very High settings, I'm completely GPU bound. On high it's very rare to dip below 30fps at 1360x768, usually I'm hovering around 35-40fps with 4X forced aniso from the ATI control panel, higher in indoor sections.
Even on very high, if I drop down to 1024x768 I'm coming close to 60fps. An E8500 at 3.16 ghz actually benches faster than my CPU from results I've seen, so their results don't make a lick of sense unless extreme really pushes everything back on the CPU. Crysis2 is far from CPU limited IME.