How do you think a "normal" JW would react if they somehow were told by a RV or Study, that their church..possibly LDS, SDA, Scientologist, Children of God, or even more mainstream, gave a similar talk to the congregation because they were aware of one of their members visiting or studying with JWs? Aha...Satan's craftiness is at it again! Or ask them to imagine themselves being at one of those meetings and hearing a talk using different concepts. Yeah...I know what you're going to say.
This really strikes home. I was there for my unexpected marking talk. From that time on, I've been treated like a germ when I run into friends and family. They soak that stuff up and never think that this is common among religions with high control. If they had been born into the LDS religion, they would accept that council as coming from God.