I wonder the same thing. My wife is native Japanese, absolutely no graphic training or previous interest in art or design.
One day she decided she wanted to make a blog about her life in New York and post her pictures. She didn't know a thing about html, web design, or anything else, but she kept at it doggedly for 3 weeks.
She showed the blog to me when she had some of it done, and it was absolutely, completely Japanese, no question about it.
The colors, design elements, graphic placement all screamed "Japanese", it was as if the whole thing sprung out of her head fully conceived.
I have a half-Japanese graphic artist who was born and raised in LA. Doesn't speak Japanese, completely American. He's a graphics and Photoshop genius, he can make anything look perfect and can get the "look" of something I want if I ask him, but he cannot get the "Japanese" look in a graphics ad when we need one the way my wife did with no experience no matter how hard he tries.
Everything he does looks like the "Peter Max" version of a Japanese graphic. He just can't do it.
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