There's one way to summarise the difficulties of these papers. 3U kids would have found 2023 harder and 4u kids would have found 2022 harder (2022 had a stats question inaccessible to most kids regardless of caliber because we simply don't study stats). I think for a 4u kid the questions in the 2023 paper weren't too bad but same for the 2022 paper apart from the last question.