Maybe hes looking at the ground when hes playingthe simple fact is you wont get an average of 32-34 fps at those settings, unless it was on a very non GFX intensive part in the game, which very rarely occurs.
When I tried it I was at the start were you walk past a washing machine and see a man on the rocks, just before the red flare, was getting -20fps Vista DX10, and I cant see even in XP with very high hack and 2xaa at 1280x1024 getting 32fps average, almost certainly will dip to 10fps and below.
I guess he does not really have AA on, I mean getting 10fps higher at those settings would mean a considerably higher speced machine possible with 2 8800GT's in SLi.