The only thing that the 'RS4' has on its side is that it's exceptionally quick on the straight.
I think you're talking about the old RS4, as all of the things you have said apply to the RS4 right up to this latest model. At least, again, according to Clarkson ... (there was a nice episode where he raced a mountainclimber with it, and lost - twice). And yes, the CSL rocks.
*puts dantruon on a list of people who have nothing meaningful to contribute to car discussions*
Hey, at least I have been able to test a lot of these cars on the Ring myself ... in Gran Turismo 4 ... ... but I've driven on the ring in an Alfa 155 1.8 TS, speaking of which, the Alfa 159 is the best handing car in its category, the best handing car overall, even beating the BMW 3 series which is FR, as opposed to the Alfa's FF.