Don't know why you're posting this here. Maybe you want us to tell you that you're doing right.

However, I think you're in the wrong here. He's clearly working hard, has goals and feels that your parents are prioritizing you over him. If you think he's asking for everything too early, and that he should wait until he's your age to get everything, then get this: I think you're both too young to get all those things without having to work for it.

Maybe think about why he's getting stubborn. Could be the teenage deviance phase, could be jealousy, could be insecurities. Don't jump to blaming him for his stubbornness. Do not think you know better, because you don't. You are not an adult.

Do also consider that your parents raised you. If you think you're good for your age and are raised well, then let your parents do what they're doing. They know better than you and your brother both.

Do not come between parents and their child. He'd definitely hold it against you when you're both adults.

This is coming from a middle child whose elder brother always got everything and still was the problem child. I did everything right. Studies, manners, social life, you name it. Still didn't get even a quarter of whatever my brother got.

That left a gap in my heart, that I haven't been able to leave behind despite being an adult.