I know so many people who do not apply to UPENN because of their secondary, it is ridiculous. Those three questions were very hard and one couldn't just bull them. I was fortunate the have found the secondary in May and I started working on it then, and it took me three or four solid weeks to refine my essays for it. But I think it paid off since I got that interview.
I hear that UPENN bases their interview questions right off your secondary questions. Which is a smart idea, I think.
DesiDentist