The difficulty level is the same as other pre u program, be it a level, stpm, Canadian, etc

At the end of the day, to achieve a good grade, you're directly competing with other people who took the paper.

Like any other internationally recognized program, the sample size is large and your results, regardless of what pre u exam u took, is representative of your performance relative to your peers.

So the answer to your question has nothing to do with the fact that you're taking ausmat. Its largely the amount of work you put in and your abilities

Short answer: no difference, pick the cheapest one

Long ans: Its just a one year program, where you go doesn't make a difference. As long as your results qualify you to enter uni can alr. Just pick the cheapest one.