Serious gamers use PC's or platforms dedicated for gaming. They have the latest graphics cards and drivers. Apple's hardware and Boot Camp drivers have neither. I see a lot more examples of people using architectural and legacy accounting applications than games. I'm not terribly sympathetic to the games argument, in that if people are going to go down the risky road of Boot Camp for games, it's like... OK good luck with that.
Hopefully there are more reports of Windows 8 booting EFI on Apple hardware, and that Apple will get firmware updates to hardware up to 3 years old to support this in widespread fashion.