University is harder than A-Levels; however, at uni you only have the one main subject, and a lot more self-study time/less contact hours, so it COULD be easier, depending how much effort you put in, and how good you are at time-management etc. Depends how much you want to learn, and what grade you want to come out with. Nobody's pushing you at uni; if you want to just glide through and get a 2:2, you can.