not true. i have a cousin that got hired by them straight out of college after his bachelors. they recruited him wayyyy before that (he interned there for the summer. paid him well, too). they recruit all the freakin 4.0 gpa, top 20 business school kids.
fuck the corporate ladder. make your bread, stack it, and make your money work for you.
an MBA will get you a job with a botique investment firm/bank....but the big dogs, yeah, they all go for the top end schools. such is the bullshit of the corporate world