book 2019 BPP is much better than the text 2016-2017

Hi

I am entering the exam in APM for the fifth time. In the 4th exam sittings i have used BPP text and revision books 2016-2017. Now i bought eBook 2019. It seems a huge difference between book 2019 and book 2017 in structure and logic. Now the book is more clear and smooth. I had too much difficulty to study with the book of 2016-2017. I hope i can pass now. But thinking that there are some good reflections in 2019 book, i think that the low pass rate of the this exam is also the way it has been structured in the theory. Too long, confusing. Now is more sinthetic and clear.