Quit the sarcy act, it doesn't suit you well.
The GTX has masses of memory bandwidth, the GT albeit a good card has a much more average amount, while the GTX won't push out OMGZ11 100fps with 16xAA if it were even possible it would still manage it, I'd guess at a fairly low FPS level.
Your GT doesn't "apparently" struggle with AA, it flat out can't do it at any playable levels as shown in the H review, possibly the reason your disagreeing with it

The Memory bus can determines how high a resolution you can use, and how much Antialiasing you can use. As shown in DX10 the GT just dont cut the mustard to render in DX10 mode with AA slapped on.