I attribute it to the sharp right angle of the windshield taking up prime realestate and in perfect location for rocks to hit. Due to the angle the rocks cause more damage rather than deflect off. More of a design than anything else. I know on my other vehicles the windshield is sloped way more and rocks bounce off and the energy isn't absorbed by the glass. Our windshield is similar to a Jeep angle and those also have a lot of rock chips and cracks due to flat windshield design. By a different car if it bothers you? I personally love the looks and design of the LC.