Here, ignoring the graphical artifacts caused by the 3D "cheat" I'm finding the game only modestly 3D. Its nothing to write home about and definitely nothing worth buying a set over.
Another thing is that there is about a couple feet of comfortable 3d depth that comes out of the TV but only about a foot of comfortable depth into the TV. Your using only a fraction of the 3d real estate by treating the TV like its some window. Treat it instead like a hologram.
I'm sure there are a few nVidia 3d kit owners with beefy graphical cards who would prefer to just see an override and frame rate hit than be stuck with novelty 3d effects.
Edit:
After some discovery, in your system.cfg file (located in the directory where you installed crysis 2), add the following lines:
g_skipintro = 1
r_StereoDevice = 3
r_StereoMode = 1
r_StereoStrength = 1
r_StereoScreenDist = 3.9
r_StereoHudScreenDist = 0.5
r_StereoEyeDist = 0.015
r_StereoFlipEyes = 0
r_StereoOutput = 1
r_StereoNearGeoScale = 0.69
This will significantly improve the 3d effect with minimal drawbacks. Its not perfect and is still WIP but its definitely good.