I guess you are speaking about the R8, which is a different concept. We cannot compare with the RS6 which is a sportvan car.
I drove an Audi R8, and yes It is an amazing car! we can compare with a Porsche 911 but not with a 718 'on my point a view)
On Audi you can always see the engine, that pleasure is not available anymore neither on 911 neither on 718...