CFA book question Vs Schweser QBank question, all, reading, difficulty

hw0799

i have been doing Schweser Qbank for 3 weeks now. reading each LOS and doing respective Qbank questions. I realize that the questions on Qbank are relatively easier than Back of chapter questions in CFA books.
how much should i rely on my performance in Qbank?
what you guys think about the difficulty level of qbank Vs CFA and what you all think is best performance measurement.?
I plan to do the Vol 1 Exam in next 1 week and than after attempt CFA sample and mock exam
Thank you all ,
Good Luck