That's a generalization.

There's a tremendous difference between Asian women [which encompasses almost 2 billion women, so this is a generalization, too] and the typical white middle-class woman in, for example. the US.

The average woman in the east is born into poverty, and is forced to face hardships from a very young age. Her birth is in itself a challenge - she's born into a culture which considers being born a woman a curse - like in India. She faces hurdles and challenges all her life - which makes her stronger, more mellow, and less entitled to the niceties of life.

The average woman in the US is born into a middle-class household where the parents treat her like a princess and cater to her every need before she even thinks about it. Her life and welfare is taken care of. When she becomes a teenager, her biggest "issue" is "Who's Justin Bieber dating nowadays?". When she's in her 20s, her biggest "challenge" is "Who's the Twilight dude dating these days?". When she's in her late 30s, her biggest "problem" is "How can I get free drinks at the bar?". In her 40s, her biggest "worry" is "Why can't I find a nice man? I have so much to awffer?"

Hence, it's a valid generalization to think that the typical east Asian woman is more friendly, more mellow, more experienced, more tolerant of criticism, more loyal, and more hard working.

That's not to say that ALL Asian women or ALL women in the US are like that.