Imagination of a self deluded man is so strong that he does not doubt he is what he thinks himself to be! He feels he really is this or that person. This delusion is very positive but it is, after all, delusion. And although these men are not hypocritical, they are dangerous, but not so seriously.
Self delusion is unfortunate but hypocrisy is inexcusable. The self-deluded do not know but thinks that he knows. The hypocrite knows that he does not know but pretends that he does.