Did I miss the part where the lap times were pretty close? I hate American cars as much as the next German-loving-car-guy, but give credit where its due. Ford is the only American car manufacturer that understands what people want, unlike GM and Chrysler who covered their ears and went "la la la" into bailout hell.
The Mustangs 'Coyote' V8, is something of a marvel to me. At no point can anyone say that particular engine is old-tech. In addition, I've yet to drive a 2011 with the track pack, but I've heard nothing but good. Sometimes I miss the low-end torque of a large displacement V8, but my more practical takes over, and I understand the reasons I had to trade my '03 Cobra in.
With that said, If I had the cash, I wouldn't oppose having an M3 in my garage, but the 5.0 GT is a great alternative for the money.
BTW....GM is finally starting to turn it around, unfortunately I can't say the same for Chrsyler.