High Quality AA and AF
Our high quality tests let us separate the men from the boys and the ladies from the girls. If the cards weren't struggling before they will start to now.
Aliens vs. Predator and Mafia II struggle to hit that 60 FPS average we need; not so much an issue under Street Fighter IV and Far Cry 2, though. We again see it go a bit back and forth with the HD 6900s.