For example, Autobild tested them too:
http://www.autobild.de/artikel/audi-...-11144331.html
M2 clearly wins, better steering, better brakes(vs ceramics on the TTRS which were malfunctioning on track), way better balance, way(way!) more playable, because TT RS( despite their high tech engineering on paper) still is noseheavy balanced....
M2 has faster irl gear accelleration, shorter braking distances. And has four seats and is a lot cheaper.
Without adjustable dampers...
So it's official that there is nothing official in car test/carjournalist land....
Cheers
Robin