Cedars is right. If you ask the average JW to explain, in detail, the doctrine surrounding the special choosing of JWs in the early 1900's, most will fumble through the details and then try to end on a positive note about Christian unity, or love, or worldwide preaching, or whatever.
As I've been fading, I've noticed that a lot of JWs don't get Watchtower doctrine. The foundations for JWs being specially chosen by God are some of the most difficult teachings for JWs to grasp. They're more inclined to point to their application of basic Christian ideas as the "proof" that they are part of the one true religion. The problem is that almost all "Christian" religions teach the same basic things. JWs are not special in trying to be nice, accepting Jesus as their savior, sharing the gospel, awaiting a special reward in the afterlife, etc. But they are constantly told that there version is superior so they buy into the whole package, whether they really understand it all or not.
If a JW is faced with the realization that some of their foundational doctrine is shaky, or false, they quickly jump to a "happy place," usually basic Christianity, to soothe their troubled mind.
They won't face the fact that they can't prove the obtuse doctrine because they like being JWs. They think its the only way.