It's not a case of finding them difficult in themselves, more that we really don't get that much support, and as they've only been running for a few years the tweaks haven't yet been ironed out. They keep changing the format of the exams so some of the past papers are a bit useless for trying to do a timed paper, and get confusing as you're not sure how your own exam will be structured.The people that tend to be taking 2/3 AHs are the ones that need them for English unis, and won't make their offers without getting As(usually) or Bs in them.