An interior feel/vibe is not something you can accurately judge by looking at pictures on the internet (even then your chosen picture hardly makes the interior seem fantastic)
Get in a Bentley Mulssane or Rolls Royce Phantom and there is no denying that you've got into a very, very special car. Get into an Audi R8 and there is no denying that you've just got into an Audi. As far as I am concerned that just isn't acceptable for a car easily into the six figures bracket.
It's why a Flying Spur feels special and a A8 in compassion feels like an overgrown minicab despite them sharing a lot of components. The difference is that the A8 feels like an Audi and the Bentley feels special.
WUT? You comparing a supercar to a Bently? Right ok makes sense?

And FYI I visit Leeds Audi quite a bit and yep you guessed it they have various R8's and I have so happened to see feel and touch one, shock horror.