Yup, we've had the same discussion over at the armor forum about the Tamiya Tiger I and Stg. III built-ups.
I don't think it'll be much of an issue, either.
Really, it would be no different than somebody entering any work that they didn't do themselves, which could happen anytime, anywhere. Thus, I don't see Tamiya's Masterwork Collection as any particularly new threat (or threat at all, actually).
It seems like Tamiya is pretty quick with the English pages these days!
But if ya can't find one, give me a holler, and I'll come a-translating!
Unless you'd rather have a good laugh with the Babelfish program!