Ford built the GT because of Le Mans. It was kept in a certain spec for racing purposes. It fulfilled it's obligations because it did win and brought attention to the anniversary. It did this all while being a test bed for Ford Performance and ecoboost technology. All the while selling out of the 250/year that will be built for the road at 500k a pop. However as a Ford fan, Chevy has been kicking the teeth of Ford for a while in the performance department and the ZR1 just adds to it. They also get more mileage and press out of it too. Within minutes of the press release, this was on the front page of the Detroit News and Free press, as well as Car and Driver. Maybe if they ever release the GT500 Ford will be able to trounce the guys in the RenCen.
Interesting comment, what do you mean by "kicking the teeth"? In 5 years a GT owner will likely be able to sell his GT at a nice profit, in 5 years the ZR1 owner will undoubtedly take a loss, as will an owner of the the ZL1, Z06, ZL1 1LE, etc - if it has a GM stamp on it it loses value. The GT represents a clear benchmark in automotive development, consider the Z06 which slightly overmatches the GT in HP and definitely has 100 more ft-lb torque yet the GT is considerably faster around a track than the Z06. I really don't see it happening however should someone at Ford want to beat the ZR-1, I doubt they'd have to match the 750 HP rating of the LT5 to do it, my guess is it'd take no more than 700HP in a GT to beat the GT's time, though quite honestly it may well be a driver intent on beating the mark could do it w/o an any added power at all. While I believe Billy Johnson was not actually attempting to set a course record, without a doubt the GM team had one goal in mind when they showed up not even two weeks later.
As far as Camaro vs. Mustang - go over to gmauthority.com and you'll find "the situation is bleak" in reference to the steady decline of the Camaro since it's redesign. I actually went to buy a Camaro sadily based on the COTY reviews, when I checked the price on a V6 - $38k I kinda decided against, however when I opened the door the decision against it was made, it's just too small I am not young and I know if you're sitting in a car for the first time and thinking "it's not so bad" - with regard to comfort, a year down the road - if that you're going to hate it. On the other hand, the trip to the Ford dear not long after reveal the Mustang was "just right", it looks good, it feels good to sit in, having for a while I find it "fit's like a glove" it's frankly amazing how intuitive the interior design of the S550 actually is. Take the Mustang emblem off the car, I know I'd still buy it. In fact there is but one person near me that bought the 2016 Camaro - they traded it just a tad over 4 months later - because it is so small, bought a Honda CRV instead and actually pocketed some cash. IMO Ford nailed it on the S550 Mustang. Frankly as much as C&D and MT want everyone to believe it's all about road course times - let's get real - drag strip times still rule when it comes to the Mustang and Camaro - and again Ford nailed it on that one. However, where Ford has really turned it on is with the Expedition and Navigator redesign, I don't think GM really cares one way or another about the Camaro vs. Mustang - it's a fun competition, however the new Expedition and Navigator have put fear into their hearts as Ford is going for GM's bread and butter.