I'm sorry, I don't want to appear pedantic, but:
1) He's using SSAO
2) He didn't get into a big firefight in a demanding story mission or in a Trial of the Rakyat with 10+ enemies on screen, everything burning down and explosions.
Your video doesn't prove much. I get almost double those FPS with my system in those condition. That's not what I'm debating.
No worries, still just puzzled. Well I guess you will see when you get the 2011 setup. I hope you see some improvements.