I think the CA bar is the hardest bar. it takes the greatest amount of raw score points to pass while testing similar subject matter.
CA is widely considered to be the second hardest bar exam after NY. Apparently, either last year or the year before, the Bar passage rate went up to 51%. The state Bar announced this year that they're going to make the test harder and get the passage rate back under 50%. I was shocked when I read that. Apparently PMBR was hiring people who used to make questions for the Bar exam. In their books, PMBR have questions that were similar to the Bar exam. They are being sued by the Bar Examiners right now for the 3rd or 4th time because of the similar questions. Also apparently, CA thinks PMBR might have contribute to high bar passage rate.