For area and approach, performance like typical cruise speed, climb/descent rates and approach speeds are going to be of use. On an aerodrome, physical size or weight can be important because of infrastructure limitations. TBH, I've never been sure of the value of learning such stuff pretty much by rote. In the real world, relative speeds (and critical or challenging type mixes) and the like will soon become apparent, and what is often more important is the range of operational performance that is possible rather than nominal or typical values, and on an airport (certainly in the UK) if there are places where aircraft over a particular size or of a particular type are limited for some reason this will be clearly set out in the MATS part 2 (the procedures document for that particular airport)..