In Russia, I imagine it's an easier call. Translated Korans are used primarily for recruitment. With a population that was raised primarily in an atheist culture, the people would be more vulnerable to the "sales pitch" and less likely to read it and see how horrific it is.
Good point if the Koran is deliberately mistranslated, which I don’t put past Muslims to do. The “sales pitch” is going to be made with or without the Koran however. I remain undecided.