May I suggest you need to look a little closer at their “Christianity” and what is going on with Putin, Aleksander Dugan and the corrupt Russian Orthodox Church before making silly claims like that.
It used to be filled with KGB agent “priests”, did it not? Without looking into it, same old story?
Give us your definition of “Christianity”. Please list each required criteria . Start with “1” and go numerically. You are expert enough to promote exclusivity , so we will all be very interested in your require positive elements . Appreciate your theological expertise.