Because Audi's are probably the most boring cars on the road and horrible for circuit driving.
I can set the scene of driving one.
You walk from the rear of the car past the fake exhausts, walking past the unremarkable exterior and jump into the office like interior.
You accelerate with no skill at all with the automatic gearbox and all wheel drive. You come to a corner, the car feels like it will never slow down because of it's sheer weight. You try to turn but the understeer is so severe that you have to slow down yet further. As you wallow around the mid corner you try to floor the throttle to induce oversteer and get the car turned. Unfortunately the computer kicks in and activates the amount of traction control normally reserved for driving up a snowy Alpine mountain. At the same time the all wheel drive kicks in and instead of the car rotating towards the apex instead it's trying to pull you to the outer reaches of the corner! You slam on the brakes again barely making the corner and feel relieved you've made it through the ordeal.
Ha ha, what did you do, read up on some old articles and spout off some nonsense to try and sound cool?
Let me give your outdated, and clearly biased, little diatribe a polish.
You walk past the rear of the RS6/RS7/S6/S7/RS4/RS5/S4/S5/RS3/S3, four large exhaust tips burbling out a throaty tone courtesy of it's variable valves being open. The exterior is low profile and sleek, hunkered down over huge wheels and massively wide tires pushed way out out to the corners. They attempt to hide it's massive 16in brakes, but fail to do so.
You jump in to the forever class leading interior, full of carbon fiber, alcantara, and jewelry like finishes, set up in a way that pleases almost everyone who finds themselves here. You put the car into manual mode, choosing to select the gears from the 7-speed dual-clutch/ZF8 yourself, and rocket away effortlessly as 306-591 horsepower hurtle you into turn one. You don't have traction control on, because you know what you're doing, so no electronic aids are cutting in on the fun here, and those aforementioned monstrous brakes paired with Quattro AWD utilizing brilliant overdriven sport differentials are more than capable of saving your ass if you run out of talent. You fear you might have overcooked it into the corner because of all that power, but those brakes slow you down with an alacrity you've never experienced in a car. The weight of it all seems to disappear under sheer grip and ability. Turn in is sharp, not 2WD BMW M sharp, but much more positive than those Audis of a decade ago, and as the front begins to bite the overdriven rear sport differential starts to bring the rear around into glorious oversteer which can now be managed with your right foot. Chassis balance is yours for the taking. There are no computers here, just massive power, massive grip, and oversteer on command.
Once you let common sense take over, and put the oversteering hooligan back in his cage, you again rocket forward, embraced by the tremendous grip that AWD provides you, thrown headlong into whatever you're pointed at as fast as your conscience allows. You're secure in that this all-powerful, safe, handsome, automobile will take you nearly anywhere you want to go, in any condition, during any time of the year, better and faster than most anything else on the road.
Only a fool would discount its abilities.
For the record I own an S6 with a few modifications, and just about everything crooky said is regurgitated nonsense from the past, and not indicative of most of the things Audi has made since around 2010. Audis aren't as sharp as their RWD counterparts, sure, but they also aren't the understeer prone heavyweights they used to be and are very fast, very poseable, drivers cars.
And we need them in GT7.
