In my opinion there is a difference between the actual teaching and how most dubs rationalize it in their lives.
My wife would never agree that only witnesses will survive to the new system but she wouldn't disagree with the WTS viewpoint either. Weird right?
Mine is the same. No matter how many times I show her a WT that says that only JWs will survive she rationalizes it away. She personally believes that many more will survive, but still somehow thinks that preaching is necessary to save everyone.