Let me use sport as an analogy to provide for clearer explainations. Let say you have top sports persons representing a nation competing for glory. To get called to join the national team is already an achievement as you are already amongst the nation's best. However in the national team, vast majority will be asked to compete at SEA games, with a much smaller number taking part in Asian/commonwealth games and rare few able to compete at Olympic level. You see to get to work for any of the three big local banks is a testimony of a candidate's quality. BB banks' staff are of a higher level of quality given its highly selective criteria. Do not be disheartened just keep improving and one day you may be there.