This is certainly an interesting (and timely) thread. Working in the healthcare field, there's a constant acknowledgment of the paucity of doctors (and their pain in providing care). MBAs are not generally frowned upon, but are seen as the people who "manage" and don't necessarily contribute to the creative motor of research and implementation. In addition to that, there is some consensus that MBAs manufactured much of this financial miasma and those with bar- and board-certified positions, viz. JDs and MDs, are unsoiled (at least that's what I get a gentle earful about). Or how about my friend who told me that I should major in "Corporate Financial Handshaking?"
Ultimately, I think it's an apples-to-oranges argument. My MD and JD friends and mentors are drawn from distinct skill and personality sets. It isn't to say that they wouldn't be successful in an MBA environment, but they have applied to and exist in a very different universe (at least that's my experience) that breeds a slightly different attitude to the professional world. That said, I would agree that the application process is much more nebulous (and seemingly difficult) for MBAs, in part due to the nebulous world of business. While some might think there is the prototypical MBA candidate, with all of the dings I've seen from M/B/B or IBs, I'd say that is not so much the case as compared to those in law and medicine (where, as one person so astutely pointed out, you meet a certain LSAT/GPA index and you're in...not to mention that most law schools require a single personal statement, no more, no less--contrast that to the five your wrote for Kellogg or Wharton).
Finally, rejoice. If they fully understood where you were coming from and knew how to do what you did, you and I would likely be irrelevant. I'm willing to take a little razzing.