This. I have a 460M in my gaming laptop and it struggles at 1920 x 1080 on ultra and high on 'demanding' games like skyrim. Still playable, though, at lower detail. Not to mention, the 6990M and GTX 580M were only as powerful as a Radeon HD 6850-6870, iirc. Imo, thats not that good considering the premium those things command...
Back on topic: OP, you'll probably be very happy with the laptop. Just adjust your expectations going in. You may have to lower the res or detail, but you'll still be able to play games.