We see so many different cars coming through our garage here at Meguiar's and they all get rock chips in the front, regardless of year or make. My '99 Miata was terrible for this, but my '04 PT Cruiser isn't bad at all. So much has to do with exposure; how much time do you spend on the freeway where there's a lot of truck traffic, how much is on rural roads with gravel shoulders where material gets kicked up onto the pavement, etc. I've taken dozens of measurements of my paint with a coatings thickness guage and it's right around 4.5 mils of total film build (primer, base, clear) which is certainly within industry average.

I can't really say that the paint on my Crossfire is any more or less chip sensitive than any other car, but there's no doubt that from a defect correction perspective the paint is damn hard. But there is a huge difference between "easy to correct" and "easy to scratch."