Schweser Bk 6 and CFA

Schweser Book 6 is sorta indicative of the CFA exam. However, the length of questions on the CFA are generally as long if not longer (in terms of time spent reading the question itself) . Difficulty wise, it can go either way. So if you are scoring less than 80% on any section in Bk 6, then focus on those sections. Sweft

How do you compare the CFAI online tests to SChewesser and CFA exam? In terms of difficulty and time consuming.