The challenge is prioritization.
The uniqueness of an MBA is that it teaches how to think strategically about a business.
While I can not articulate exactly 'what' it teaches, I do know that often times in the face of new circumstances and rapidly changing conditions it has enabled me to ask the right questions and create the right framework to make a decision.
What I love about startups is they require this type of thinking. It has helped me tremendously in scaling technology companies.