Most jobs aren't looking for geniuses, but most jobs of comparable responsibility (ie. graduate jobs) ask for a 2:1 plus 300+ UCAS points as a minimum. I think BA are selling themselves short in lowering the requirements. They would have no shortage of quality applicants asking for the same as most graduate jobs.
This isn't a graduate job though.
Granted most successful applicants did have a degree of some sort, but there are a good number of others who only had bare minimum A-levels or equivalent. Much more emphasis is placed on evidencing non-technical skills that could have been acquired through a number of avenues, not necessarily University related.