Exactly. The problems that pertain to the material are top notch. If you aren't capable enough to discern whether or not the material is covered on the exam, you probably shouldn't be taking the PCAT in my opinion. Geometry isn't covered, therefore, don't study that material.
EVERY study guide is going to be deficient in some area otherwise there wouldn't be "competing" companies. I felt that it was the best bang for my buck ... I bought 3 different guides and the only one that I felt was helpful after taking the exam was Dr. Collins.