So, I got Guild Wars 2 to run in Win 7 in a vm in VMWare Fusion 5. Awesome! One issue. The game is shading squares of texture, but it's rendering them in reverse. Check out the screenshot.
Glad you could reproduce it!
On this macbook pro (Late 2011 17" 2.5 i7), it's got the AMD Radeon HD 6770M 1024MB graphics.
I got it to work on another macbook pro (Late 2011 13" 2.8 i7), and it's got the Intel HD Graphics 3000 512MB graphics. There's no issue on this computer in a similar VM (Win 7).