I can only think that Sir Alan chose Simon over Kristina because of his age, both adviser said that Kristina could be capable of working on her own but Simon would need someone checking up on him. Simon maybe young and Alan may feel that he can teach Simon more than he can teach Kirstina, however Simon has had every opportunity to be a successful buisnessman with his upbringing where Kristina has come from a working class background and slaved her guts out, she has proved that she is hardworking and committed. It's a shame that she lost out. I thought at one point Alan was going to give both of them a job