what type GPU is better for SoW_BoB?

[Flyby]

guys, I'm not meaning to sound argumentative. I know new stuff will be out. I'm really only asking a technical question about which might be more important for SoW, gpu-wise. Regardless of what card it's run on, I just want to know (if it's a legitimate tech question) if the SoW rendering engine is more inclined towards being shader intensive, or memory-capacity sensitive. Maybe I misunderstand the article I read, and linked in my first post, but that's all I'm asking. I had the impression that one way might favor ATi, and the other might favor Nvidia. That's all, really. Nothing to do with when a gpu or the sim comes out.