I hadn't had the chance to read this article yet myself, thanks for posting the English translation! (it's a lot quicker for me this way XD)

Ayumi wrote the lyrics, as everyone said, but reading the trans, I can't tell if she was originally just going to translate the English into Japanese. Looks like she changed her mind halfway but she got her ideas from the original lyrics. (will look over the article in Japanese if I have the time)

Also, I suppose all this fighting about Ayumi being more "American" or "western" for B&D will come to an end since Ayumi basically said she wanted to do something like that.