I don't know - I never attended a "normal" business school, but I did do night school at a ACBSP accredited junior college to get all my post-bacc CPA coursework.

I can't compare, but I'll admit that AACSB dual accredited Business/Accounting schools with Accounting Masters programs prepare their students better than mine did for the CPA tests. The exams they took were significantly harder than mine and tested the comprehension of a lot of advanced material that I learned from experience and had to learn via CPA prep coursework. Sadly, a masters wasn't an option to me when I started my post-bacc education.