Disclaimer: I am not promoting evengelical christianity, Jesus as god, etc. etc. I am merely submitting an opinion
I think that those JWs who profess to be annointed are in the same category mentally and emotionally as born again christians...along with the JW baggage. What I mean is that they act weird because they believe certain things about themselves (which I believe the bible clearly teaches) but can't justify the belief that they are the only ones deserving of going to heaven aside from what the Watchtower teaches. This causes them to become highly, well, weird for lack of a better term.
Also because other JWs put them up on a pedstal the feel that they must put on a front that they are vastly informed of bible truth and doctrine. I can go on and on but I think you get the idea. The ones I have known throughout my life have been odd ducks.