A levels are easier (generally). You can do a more narrow array of subjects, this probaly does make them easier as they interconnect. Chemistry, Fmaths are not easier,imo, than IB. But yea i agree that a lot of A levels is kinda too much do learning how to do the exam. I swear, you can know the whole of A level chemistry and still not get a good A if you havent done enough exam practice papers.