Okay, finally I understand why - out of the mouth of an Nvidia driver writer: "...those are not features inherent in any of our drivers, beta or otherwise. Users of NVmax and other similar tweak utilities may find a configuration expansion as a result of registry modifications bleeding over from one driver install to the next. But utlizing our drivers alone, you should see only the Texel Adjustment Bar in 'More 3D' options."
Nothing is sweeter than having your sanity confirmed. Having never used NVmax, I know now what I see is what I SHOULD be seeing.
Time to go pick up NVmax, I guess...!