audi groupe not vw groupe so audi has Better sells in 2014 more than Mercedes-Benz and bmw so audi is better than bmw and Mercedes-Benz,statistics ma freund. 
Seeing this topic and your things you've been writing LOL you literrally know nothing xD
Nr 1 Bmw for couple years now, Mercedes Benz and then audi. Audi almost passes Benz.
Those are the real stats:D
Besides this,
i'd rather take the touring version of the Rs6 looks way better.