Business schools value diversity, so scores matter less if you have compensating factors. Note that the attributes of getting into Bschool might not be the same attributes as getting a job, depending on the firm.
Not all recruiters care about 700+ scores, obviously, but I was referring to top firms. The other 90% of recruiters just care you got an MBA from the school they're looking at. However, the difference between top 5-6 schools and the rest is that nearly everyone has over 700 GMAT scores, so obviously no matter what GMAT score you have it is not possible to stand out that way. In schools where the median is...lets say...650 or so...then a 700+ will stand out quite a bit more.
In my general opinion, the top tier of students at ANY business school secure jobs with the most prestigious firms. Strangely enough, this also makes the argument that for the average person, it is better to be a big fish in a small pond than vice versa unless you really have what it takes to be a star.
What I mean is that if I take strong applicants (700 GMAT, 3.5 GPA, 4 years decent Work Exp) and send them to Harvard, it'll be really tough for them to stand out because everyone is pretty spectacular and have high GMATs and GPAs. If I send them to a top 20 MBA instead, they will end up being in the top tier of the school and might have an easier time getting jobs from top firms that recruit there. Caveat being firms like McKinsey might take dozens of Harvard grads, but only a couple from another school...still I think my argument stands.