I dont want to call you a liar, but I've used C&C3 on my MacBook in XP for hours without any damage at all.In Boot Camp on a 2.0ghz, 1GB RAM, GMA950 machine, I can run Homeworld 2, the most epic game ever.
It was 4 constant hours of Homeworld 2 that made half of the bottom case of my macbook crack and turn yellow from heat. I'm talking 9 square inches of cracks, not just one or two piddly lines.
Moral of the story? The Macbook cannot withstand manufacturer's intended use.