What? Go take a financial statements analysis class and then tell me how MBAs don't "study" things. There are certainly ways to coast through an MBA program, as there are ways to coast through many things. Simply because MBAs don't have to go through the mathematical rigor that an engineer or physicist does does not mean there is NO rigor or requirements necessary to attain an MBA. There are many vacuous, over-confident, arrogant MBAs out there, but that is part of the human condition not simply inherent in those who go earn MBAs.
This broad (and widely inaccurate) characterization of hundreds of thousands of people is mind-boggling.
Engineering mathematics is not for everyone, and indeed not required for every MBA graduate, but it certainly helps for the more quantitative courses. And finance at one school can differ wildly from finance at other schools. Look for the professors. Look at the courses people take. But also look at the culture. Some universities are focussed on the money, others, like Yale, on much wider impact in business and public service.