Did Cadillac miss out on a great opportunity or is GM protecting the Corvette/Camaro?

Although I am pretty excited to see this car, and even more excited for a test drive one, I have to admit I am a bit dissapointed by the lack of cylinders. I'm having a hard time understanding why Cadillac chose the LF4 over the Corvette's LT1 when the power outputs are very similar. I will admit that I have never tracked a car myself but it is my understanding that most people prefer a naturally aspirated motor over a forced induction. With this car's main focus being how track capable it is, I'm very surprised that it does not come with the LT1 v8 and the benefits of less weight and cooling necessities as well as the possibility of better fuel mileage with the cylinder deactivation. I'm not trying to discredit the ats-v. I'm sure it will be a very capable car, and I remember reading somewhere that this is the fastest car Cadillac has ever sent around the 'Ring. I personally dreamed of this car having an LT1 and performance cam so it'll have that mean loping idle, and sitting in my driveway of course.

Anyone else agree or disagree with me? Any thoughts why Cadillac chose LF4 over the LT1 for a track car?