...the AMG Owner's Club won't like what you said.
But I fully agree: because AMG is running some race cars in the DTM, this doesn't mean they sell race cars to customers.
Their products aren't bad (I love my ML55 and my wife will probably get a SLK 32 AMG next year) but I don't consider them to be real sports cars. The SL 55 and the E 55 are that heavy...AMG limits them at 300 kph because of the tires. And I can't consider a car at almost 2 tons of weight to be a sports car.