Well I don't know how helpful this is, but I saw a doco about SIA and recruitment and it was said that they are looking for people who are natural hostesses..quote "you can't train people to serve others". Add to that the Asian influence and I think it's a different definition than we might think. Probably more focused on harmony than leadership, maintaining the status quo etc...
Of course this is just my interpretation and frankly could be way off base.