Quirrel strikes me as the sort of character who is intended to be impressive. Pretty much all his charactaristics hit my "badass" buttons. The martial arts skills, the powerful magical field brushing at the edges of Harry's little one, etc. However, I wouldn't want to be like Quirrel, and I can't imagine being Quirrel-like and still at all like myself. Whereas Hermione impresses me in the sense of being almost like a version of myself that gets everything I try to be right and is better than me at everything I think matters. Hermione is more admirable to me than Quirrel, but my sense of awe is triggered more by badass-ness than admiration.