I wish I could find the thread, but someone actually counted the pages of text in the EK books versus the BR book after you remove practice questions (if you look at the BR books, you'll see about 20-30 sample questions incorporated into the text). I think it came out that BR was shorter by a few pages than EK. So the actually reading of text is about the same.
Where BR materials are useful are the passages and questions, because the answer explanations show how to think your way through questions using minimal information and mostly test logic. Those are what make BR books invaluable (if you ask most people).
