I think you're on to something, @
Mars Attacks. I also had to adjust somewhat when coming from GT6 regarding braking before a turn. I do think that some of that can be related to the view height on the bumper cam. On some cars it's lower - closer to the ground - than in GT6. This makes it more difficult to judge the speed when coming to a turn and also gives less "overview" of the road. It's also related to the FOV - which I find myself messing around with and not being able to get it "just right".
I believe in general that they should give more options when it comes to the camera placement in AC. For example, the bonnet view seems to be exactly the same as view as the bumper view (or 1st person view). The only difference is that they "slap in" the bonnet on the screen. In cars that have a short bonnet - like the Zonda - this isn't a problem, because you still get a good "speed feeling" or sense of speed. But with the Z4 for instance you lose all sense of speed because the bonnet takes up a large portion of the screen and you don't see the asphalt rushing by when it's close to your viewpoint. This forced me to drive with 1st person (bumper) view, but the camera is a little low. I hope they make it a bit adjustable.
Back on topic: I think the graphics in AC are great. Sure, the lighting in GT6 is in a class of it's own, and in some cases the lighting and contrast in AC might seem a little flat/bland, but honestly, in real life the lighting can be somewhat "flat" as well, depending on sun, cloud and general visibility/atmospherical conditions. Reality doesn't always look as good as in GT6, is my point.
Yesterday, when I for the first time took the Z4 GT3 out on Nurburgring I honestly didn't even notice the graphics - or maybe just subconsciously.
I mean, running that car around that track I cannot remember
ever having so much fun in any racing sim,
ever. It was just incredible!
For me the graphics are "good enough", and the physics and ffb just unbelieveable.
Btw, I run two GTX 670s in SLI, and use a T500 wheel.
Btw2, I still play GT6. The ffb there is great as well, and there is Bathurst, Brands Hatch, Spa, Le Mans and Laguna Seca.