Nice comparison between the two sims! Much as I like AMS2, I have to say that it seems like ACC has it beat. Sonically, ACC is way better, much more raw. And visually I much prefer ACC as it seems grittier and more realistic. It will be interesting to compare how they drive. Bring on tomorrow!
All of the engine noises in ACC GT4 pack are superb. Easily on par with RSS GT1 pack for audio lovelyness and no one else comes close to those two.
The Camaro in the ACC GT4 is excellent, great V8 noise.