The interview isn't really *that* difficult, I think it's just a matter of preparation, nerves, and the subjective nature of what the might be looking for. The written was kind of difficult even though I had thoroughly studied the gouge and the "ace the technical pilot interview" book. But I passed! The panel interview went well for me, and the sim went ok. The sim is the most straightforward part as they send you a syllabus for it prior to the interview, but it at the end of a long day and jetlag may set in.