Wow came out in 2005. The witcher 2 came out last year. Even with my system I can't max out The Witcher 2. I have a 2500k, 6950 and 8Gb of DDR3 RAM.
Some how I would be surprised if wow would be harder to run that The Witcher 2.
0_0 What fps are you getting on witcher2 with your specs?!? they must be playable when maxed out atleast?