What I take from CJ's comment is that either students with lots of HCE think that they either know it all already, or the HCE replaced behavoris in the classroom (ie. study habits, note taking etc)... both can cause some issues IF you don't compensate and work harder. There's pros and cons to each applicants situation, neither is better... at the end of the day the students are there because they deserve to be there and assuming everyone works hard, everyone will come out with PA-C. Obviously you wouldn't be able to practice if you botched every rotation. Therefore, you learn the skills and apply it.
In my own experience, I am very adaptable... meaning I am a hand's on learner and I can catch on pretty quick. I don't have that star level experience, however I study hard, I retain, and I APPLY IT. I am sure that I can speak on behalf of many of those high GPA, low experience applicants.