Not quite sure why the answers here have to have the macho attitude of 'don't complain'. The starter of this thread has a vary valid point. Having got several thousand hours on both the Airbus A320 and the 737 they are chalk and cheese. Of course it is up to easyJet how they select their pilots but many older pilots have the attitude of good pilots are good stick jockeys. That is not true in todays airliners and certainly not true in the A320/319. Cathay Pacific have had a policy of selecting ex Harrier pilots but I can say that they don't always make the best airline pilots!
Of course someone who already has many hours on the airbus can more easily assimilate the easyJet procedures as they have more spare brain power! You can't determine that when you put people in a 737 sim for the purpose of assessing them for the A319!