2024 SIMCAT VS AIMCAT

I score well in simcats, in the range of 50-60, and poorly in aimcats, in the range of 30-45 (proctored ones).

I want to know how close are this year's simcat/aimcats to the cat level. As we know the difficulty level may increase this year compared to 2023, so which one seems closer to it?

Especially DILR, I can almost always solve a minimum of 1 set in simcat DILR, but struggle to solve even 0.5 set in aimcat DILR.

I really want to know where I stand, should I be worried about my aimcat performance? Or is it really toooo difficult than cat?

(please answer based on this year's mock levels only, not the general perception of AIMCAT being extremely tough as people claim it was close to the 2023 cat level last year)