Why exactly are people considering 23s1 as difficult?

People are saying it was 2nd/ 3rd hardest shift... I mean I understand it was tough and I am expecting 220 - 230~ marks in 23s1, which is about 20~ marks less than my average marks in previous year mocks, so I just wanted to ask... what exactly do you think made it better than other shifts? Since every paper in 2025 had tough/lengthy maths (I lost all those extra 20 marks in maths lol)

I don't mean to say I don't consider it tough but from what I've heard, the maths problem was faced in every shift right?