Kwagga,
The aircraft statistics are there for a reason which might not be apparent right now but trust me, it's beneficial to have a rough idea of aircraft size and what types of aircraft fly where.
I'm not going to give much away but suffice to say it'd be good to know what sort of aircraft would be used for a transcontinental flight as opposed to a regional flight from Newcastle to London, for example.
Since I studied Aeronautical Engineering i've always had a big interest in any type of aircraft and generally know most of the models inside out, so these stats weren't surprising to me. It's worth reading over them once or twice though. You wont need too much detail, they wont ask you how many seats a SAAB 2000 has for example.