Greetings~ The Bridge was pretty tough....I took it twice. First time I studied with the Study Guides, and got a 51%....Yikes! And I already have my CPM. Second time I studied quite extensively with the CPSM Hardcover Books, as well as the Study Guides...and passed. But not by an incredible amount. It's a lot of "which of the following is the BEST answer". Quite a few questions on Delphi Technique, only 1 mathematical problem, but a lot of situational problems, not much definition reguritation.
Hope that helps. I have the books and study guides for sale if you are interested, and I highlighted quite a bit in the study guides right after I took the test the first time of items that were mentioned on the exam.