This post by a female redditor :http://www.reddit.com/r/seduction/comments/ck0mv/ideas_for_openersnegs_that_work_on_men/ shows why qualification is important. Qualification allows the woman to believe she has won you over by showing you some aspect of your personality which you like, rather than you just being interested in her for her looks.

From the post:

I don't have difficulty attracting men physically, but I find the mental attraction way sexier, and I'm curious about what it is that really gets into men's heads.

She knows she can get men just because of her looks, but wants instead to win them over with her personality. Game is validated by this post.