Just a pure guess, but I would honestly say if you KNEW the material (not just memorized the answers), I think you would set yourself up for a 22-23+. There are only so many questions they can ask you, and DAT Destroyer pretty well covers a lot of the bases. It seems unlikely they would ask you more than 3 or 4 you haven't seen any resemblance of in that book. Just my $0.02. I mainly memorized this and did Chad's, did very well with this method.