Yeah I commented the exact same thing on the Theory (extended) and even the Alternative to Practical exams. I did pretty much every past paper I could find for each one and the three that I actually sat for real were all by far the most difficult and I could tell I was scoring less. Even the past papers I sat in the early stages of my studying/revision, I seemed to be scoring a lot better! Weird that they'd do that, I just hope the grade threshold will reflect it.