What's far more interesting is what they have to give up for their A/A* or firsts at University level - caution - stereotyping:
A) They are better-off students who don't get to enjoy much of it until they retire/spend it on schools/unis for their own kids
B) They lack independence. They have been listening to their parents their whole life.
C) Consequently, most Asian international students are rather childish in the way they act (mostly girls, but guys as well - interested in pokemon and stuff like that -- wtf?)
C) Most don't have boyfriends or girlfriends until they are in their twenties.
What it comes down to in the end is hard work. I just think their approach to life is critically flawed, as they want to provide for future generations, without living their life themselves.
It's rather easy to get good marks without studying as much as they do - so why be so anal about studies all the time?