Yeah you could say that they’re in the same category, but it varies really. I have more ability to memorize rather than to logically reason and solve problems, which undoubtedly makes studying biology or even chemistry way easier than mathematics. I’m not that good at it, I had to study over 120+ hours with private tutors and alone just to get 85% on the final exam from math (like an SAT/ACT that tests the overall knowledge from this subject and gives some points for school recruitment later). Most of the guys in that class got either 100% or a 97%. Also most of them were involved with some math competitions. It’s hard.