I can't stand when people are taught to listen instead of think, and that predilection of mine is why I can't see the sub-prime mortgage crisis as being at all similar to college debt.
Someone who is going to college is supposed to be bright, intelligent, and motivated. A budding critical thinker who can deal with new and complex ideas. Hence I don't think someone who makes decisions based on what they're told is a good candidate for college. Likewise I don't think someone who is focused on the past success of others is exactly an ideal college candidate, either. Both of these things are ostensibly why there are large essay sections as part of the college application process.
In any case, I think it's kind of disingenuous and silly to have the same expectations of someone without a high school degree and three kids working 60 hours a week getting pitched on a bad loan and a top end of the spectrum student getting pitched on colleges. You can't have the same expectations.
That said, I think you hit the nail on the head when comparing modern college recruitment practices to used car salesmen. In fact, visiting MIT (academic activity related) remains one of the most disillusioning experiences of my life. Sure, science goes on there, but I felt like I was inside of an infomercial.
If anything perhaps both are a sign that K-12 needs to have more coverage of financial- and media- literacy.
But I guess I've regarded the success of graduates of Ivy Leagues and other prestigious schools as having more to do with being part of the good old boys club and networking with the wealthy than actually having anything to do with having good teachers.