humm.. I think the old tests are only good for guiding you on what materials to study. So, don't look at them hoping to see some of the same questions on the actual exam. I looked at many of the old exams like the ones in the 70 and 80s, but from what I remember, I only saw like maybe 5 to 10 repeats. If you're looking at a score above 90 and depending solely on decks for preparation, it will be tough because many of the questions are, like you just said, are application or conceptual questions. I got a score in the low 80s, which I am not satisfied. But seeing how hard the questions are and that some of the topics are completely foreign or not even closely related to what studied from the decks or first aid, I am not sure if I should even try for a retake. I am afraid I might drop from pass to fail.
Don't want to scare you, but do try to study intelligently such as getting basic concepts right on top of your head by reviewing your syllabus or using wiki, rather than rote memorization. You will certainly pass, but getting a 90 will be reserved for those few chosen ones.
