You do realize that it is not relistic, right? Parents are human, obviously they like one of their children more than the others, for many reasons. It can be because of said child personality or because that kid is more alike said parent... But is a thing. Just like children like one of their parents better than the other.
I am pretty certain that this isnt realistic. Some parents do like their children more than the other, and you aren't wrong about that. But just because "some" parents are like that doesnt mean all parents are like that, and just because "some" parents are like that doesnt mean it is the right thing to do. If you had a kid you would understand. Btw mostchildren, not all, dont really choose off of love they choose who ever gives them the most or spoils them the most. Once they grow up they realize whats more important and see what their parents were trying to do and the way they were trying to take care of them. If not they still love them equally. Ill be damned if I had to choose one over the other. Unless one of your parents didnt take care of you or something then that is understandable, or you're in that type of situation.
Thank God he had enough sense to not be with his brother. That would've been disgusting....sorry, but honestly fuck the mom, she is a complete asshole. You cant favor one son over the other. You have to love them equally.