"We like 4xAA. Due to the alpha-to-coverage feature on the Xbox 360 GPU, it's one of the key reasons we can render a lot of "alpha test" foliage like trees and bushes without them starting to shimmer or dither (as alpha-to-coverage with 4xAA effectively gives us 5 samples of alpha "blend" without actually using alpha blend). Of course that leads into a lot of interesting ways how to get the the other "standard" z-buffer based rendering schemes to not alias, but let's not get into that discussion right now."

Alan Wake confirmat 4x aa !