Ah ok, you mean the breakdown. We’ll look into it now. The breakdown is calculated separately from the actual test score so the Rank you see is definitely correct as it is right now.
It might be that a couple of the questions are tagged under multiple topics. Will let you know shortly.
As for the difficulty of the tests…
Without getting the official data from the real tests we cannot say for sure, but over the last 9 years, the feeling is that our mock tests are a little bit harder than the real thing. Most children who score highly in our mock tests go on to score highly in the real exam.