My oldest worked the hardest for grades and did very well. The middle one hated school but wound up graduating from college and is now doing extremely well. The youngest had everything come easy. To me he just has “smarts” and excels at everything he does. He’s also the most driven, a real type A personality.
They say the oldest tends to be more independent which I was and the middle child is resentful for feeling ignored which my sister is. The youngest gets spoiled which my youngest sister definitely did get stuff we never got and got away with a lot.
I guess some of these stereotypes are for real. :-)