You need to judge people by his/her present, instead of past or future. In industries other than high-tech industry, people with MBAs usualy do perform well. Of course, IBM's Lou Gerstner was one of a few exceptions, but please note he had a technical team surrounding him in making key decisions on where to go. That is also why Microsoft has not been doing well since Bill Gates religuished her reign to Steve Ballmer, a Stanford GSB dropout
Mangement science is not a rocket science, actually it is not science.