The Aviation paper was very simple, all the questions were drawn from the information supplied in the Stage 1 preparation booklet. In addition, there were a couple of basic questions about the principle of flight (if you don't know the answer to these, perhaps you don't really have an interest in ATC anyway).
Yes, the aviation paper was also made up of Maths. But calculating the distance travelled in 10 minutes for a 747 cruising at 500mph is hardly A-level maths, especially when you get a choice of 4 answers.
You certainly don't need knowledge of equations (I still don't know how to transpose formula and still worked out every question without a struggle).
The preparation booklet certainly wasn't useless and the maths not difficult - that's coming from someone with a lowly B grade at GCSE!