Luke wasnt a little bish like darth vader. He wanted to join the Imperial Academy to leave tatooine. It wasn't his dream to be a jedi. He had to because his family was gone and his dream of joining the Imperial Academy was over. Anikan however wanted to be a jedi. He wanted to be a powerful jedi. Luke needed to be a jedi. So in the end Luke was the most mature and became more mature at the end of the saga (though he was more badass in Empire) Vader was consumed by his lust of power. In the end though Vader wen't through some rough stuff. And when you have a hooded charles manson telling you how to do things you become evil.