You should also pay attention to this bit from HardOCP, which is, by the way, one of the most AMD-favoring review sites on the web:
"We have harped over this before, but this game shows once again that AMD's driver support is biting it in the butt on a new game release. With not even an ETA on a new CAP for Skyrim to support CrossFireX, and no performance driver in sight, it is rather depressing for AMD GPU owners. We keep seeing this with new game launches these past few months. Rage, Deus Ex: Missing Link, even Battlefield 3 had better and working performance and SLI drivers from NVIDIA on game day launch, while AMD support was lacking."
"With CrossFireX and SLI being based on profile support AMD cannot afford to lag this far behind on new game launches. NVIDIA simply has more support out of the gate for SLI in new games it seems. Gamers don't like to wait. When a new big title like this is released and unlocked at a certain time on a certain date, gamers are lined up waiting to play it right then and there. It matters that performance and Dual-GPU acceleration is supported when the game launches, and not days after."http://www.hardocp.com/article/2011/11/11/elder_scrolls_v_skyrim_performance_iq_preview/3