Provided that those are all sedans and not even made for performance like a Mustang, it doesn't surprise me. More of the cost goes to luxury than performance with those. Try taking on an SLS or a SLK which were made for performance.
I have been beaten by SL63s, SLK55s and I don't think I stand a chance against an SLS - beast that car is.
I have also been beat by two souped up (boosted) RS4s. Oh BTW, Porsches (squashed VWs) are frickin fast. IMO, best engineered sports cars on the road.
For less than $43K invested, I am happy.