The original GT5 demo uses the same upscaling trick (as does Ninja Gaiden), but it is kind of hard to tell unless you get really close to a 1080p native display (for the GT demo anyway - it's easy to tell with NG:S).
I'll take no FSAA 1920x1080 over 2x FSAA pseudo-1080p any day (I do that with my PC games all the time, since with my 7800 it's either one or the other with new games)









