He means that you compete against set standards so it doesn't matter who the other candidates are.. but expect a huge mix, with everything from" 1st time 18/19 year olds to 3rd time 26 year olds, some degrees thrown in there, maybe a PhD, umm.. some ATC staff perhaps, some IT workers a policeman, pharmacist and aero engineers. It is diversity which makes BA so popular and exciting, I think.