GAF loves it bullshots. It'll swallow them up whenever, however.
To be fair... these look like photomode shots... and from what I can recall, PGR3 pictures from photomode looked pretty stunning too.
No doubt these look a bit better due to extra effects, especially that rain effect, but people expecting it to surpass GTHD much less equal real life are not just setting themselves up for a disappointment, but are delusional.
Again to be fair, I think the level of details in these games have progressed to such a point where not even the hyper critical discerning eyes of the hardcore gaming obsessed laymen can accurately point out the artifacts or the effects they're seeing. As a result, you're going to get a lot of confusing jargon pushed back and forth with some attempts at photo comparisons, which are sometimes good, sometimes bad.
The pics look great... but they definetly don't make you bat an eye and think... wait, is that real? I think in that sense Nostromo is pretty justified in saying that the cars look plasticky; for whatever reason, they just don't look 'real', as detailed and gorgeous as they may be.
GTHD on the other hand... it has that ability. If you find some of the photo comparisons of that game, a lot of people would hesitate for a moment or two, to point out the real picture. And if you bring it to a normal person, outside of gaming... you're going to get a few wrong answers.