Take Note !
The information booklet that you are talking about unfortunately is slightly out of date is about to be replaced at the end of the month. The new booklet is devised by controllers from various units and college instructors responsible for the Basic ATC Course. The information on aircraft performance is fairly accurate but is provided as a gauge to understanding certain aircraft TYPE performance. I strongly recommend that you revise the old booklet to gauge a good understanding of ATC and its principles. With reference to aircraft performance, understand a typical cruising speed, range etc of various "similiar" type aircraft (ie one example is B737 and A319 are fairly similar etc) as this is not an exact science and aircraft performance is affected by many things such as Wind, Loading, Temperature. Good luck at your test.
BBB