I realize that this is pretty much a non-issue, I just found it to be interesting.
As we know, the Watchtower often uses a qualifier for Christianity by using the term "true Christians", which of course JW's know is synonymous with " Jehovah's Witnesses", all others would be the opposite, or "false Christians".
October KM, page 2 in the article "New Brochure to Be Offered!", introducing a November campaign to offer the brochure The Bible - What Is Its Message?, mentions in paragraphs one and three people of "non-Christian religions", in a sense, isn't the Watchtower acknowledging that the opposite of non-Christian would be Christian religions?
I just thought this was interesting, even though it isn't meant to be understood that way.