I’ve read an MBA – The 10-Day MBA by Steven Silbiger (a CPA when he entered a MBA programme), a “step-by-step guide to mastering the skills taught in top business schools”. The chapters cover usual topics – marketing, accounting, organisational behaviour, finance, economics, strategy etc, summaries of the topics. A MBA would not teach a business studies graduate anything new.
I now have the “degree of 10-Day MBA” conferred by the author.
An MBA’s value is (re-)introducing students to business concepts, consolidating knowledge and providing high level analytical skills at a post graduate level irrespective of students’ background. If you want to be a specialist, complete a CA or masters in finance etc. if you want to be a generalist that can walk the talk, complete a MBA. I think business needs both. Personally, i'm still not sure i want to take the time and expense re-studying basic business science subjects i left years ago.