I guess one could say it really depends on the person who's being called on.
There are obviously a vast variety of people who have some theological savvy, I remember running into them out in service and of course there are people who aren't and then there the ones who may be having some kind of personal problem which makes the JWS pitch sound pretty good.
Once the individual is deeply indoctrinated with the designed delusion of hope which the WTS presents the struggle begins.