Look at my screenshots, idiot! That is at 1680x1050 resolution with 16xAA enabled. Are you telling me that your computer just by upping the resolution a tad is suddenly going to "regularly" drop down to 30 fps!? If you are, then you are absolutely, positively 100% full of sh!t.
That's why I asked you if you were running vsync, because there's no way in hell your setup should be dropping that low. Why don't you try to enable vsync with DXTweaker to see if it helps, because I've noticed that sometimes games will actually drop to lower framerates when not running vsync in stressful areas.
But right now you just don't know what the hell you're talking about. I have played all the way through COD2 recently on an 8800GTX with a resolution just below yours and 16xAA and haven't seen anything much smoother. It never even comes close to 45fps, much less 30, and the performance difference in our resolutions isn't that great.
55 fps avg at 1920 x 1200 with 4x aa, its pretty easy to see how it will be dropping to the 30s or slightly below as a minimum framerate with 16x aa.
Just crazy. These new cards do not take a 25fps performance hit by going from 4xAA-->16xAA on a game that's a YEAR AND A HALF OLD.
If there's anyone "spouting garbage" here, it's you n00b.