Crysis 2 performs the same no matter the API or driver used. The only differences are found in DirectX 11 in the minimum department but these differences are too small be taken to seriously. Not to say that Crysis 2 Minimum FPS wobbles a bit too much and I have to discard some test runs because of that. But average results are fairly stable.
What I said earlier applies to Metro 2033 too, minimum FPS is a bit chaotic but average FPS is pretty much the same between all runs, no matter the driver used.
Battlefield 3 plays well on all three drivers but looking at the results, 8.951.1 looks more stable than the other two; 1 FPS might not be much but sometimes, especially with very demanding games, each frame counts.
As seen countless times, DiRT 3 delivers the same framerates regardless of the driver used.
Best driver for Skyrim remains 8.96 28 February, 8.951.1 behaves almost the same as 12.2 WHQL. Given the many complaints about image corruption when using newer AMD drivers, if you’re still playing Skryim I suggest you stick with your current driver. I haven’t played Skyrim since I finished it a few months ago and the tests I do in Skyrim aren’t comprehensive enough to say if image corruption will still occur.