I don't know, AJ was forced to grow up pretty fast and had to look after her family and she really didn't have problems with jealousy or more competition. You don't suppose that Triple H may have fostered this behavior into Sasha? I mean all of the heaps of praise he gave her, putting her onto such a high pedestal, giving her all of these accolades, the IWC treating her as God's gift to wrestling, etc. It's bound to inflate anyone's ego and give someone a chip on their shoulder. Charlotte, like you said is more mature, but things like her brother David's failed wrestling career, and her other brother, Reid succumbing to his demons, also may have helped temper her and helped shape her perspective on things as well.