Bran was thrown, Tommen lept. Bran had no choice, Tommen chose. Bran didn't listen to his mom and paid with his life. Tommen listened to his mom and chose to pay with his life. Yeah, I see the similarities. A Lannister ALWAYS pays their debts.
Cersei Lannister. "The more people you love, the weaker you are. You'll do things for them that you know you shouldn't do. You'll act the fool to make them happy, to keep them safe. Love no one but your children."-George R.R. Martin, A Man Without Horror