@ Stealth, you said what I was going to say, the leadership are equally deluded into a belief of immortality, ruling the universe with Big J and Jesus. It's a kind of Napoleon complex where human deficiencies are compensated in the individual by them inhabiting the most glorious role possible.
JWs who join the cult (as opposed to born-ins) have already made the switch, by ditching reason as the basis for decision making, to faith. They now believe in a supernatural resolution to all of life's problems in a miraculous dream of paradise. This is how cults normally work.
The only significant JW membership increase is in the third world, in troubled places like the Congo. The newbies understand there are two classes; earthly and heavenly but have little idea of Watchtower history getting in the way of their destination choices. So it is not so far fetched for the newly converted (who probably thought they were going to heaven anyway) with poor education, poor reasoning skills and buckets of faith to see themselves as "super heroes" within the cult.
Just eat the cracker and drink the wine and know that you are special (just like the leaders!)