I agree with artist2022 in that the angles were a little easier. But I thought keyholes were harder than BC - I had a lot of rock keyholes.
With RC, it just depends if you get interesting passages. If you don't get any, you should "pretend" like they're interesting.
QR had a lot of quantitative comparison questions, probably more than BC had, but they were of similar difficulty.
Everything else was about the same.