Damn right they are nearly the same. As for your being unable to understand Umbridge, that only shows that you are not open to certain sins of the intellect. The way I described her in It Was All on Account... was actually intended to round off the portrait of a mental degeneration in which personal vanity and the search of value through personal power (because otherwise one's life is not felt to have any value at all) are joined with a storehouse of hatred which can be aimed at any object with equal self-righteousness. The common point is the lack of value in one's life; that value is sought by taking on a smooth and false exterior, by demeaning others so as to feel superior, and by seeking power so as to be able to do so more effectively. How many young revolutionaries, frothing at the mouth with the misdeeds of the evil conservatives, have become old conservatives, willing and ready to use any means at hand to squash opponents? People search for power because it gives a credible approximation of respect, and they search for pretend respect because they want to silence the suspicion that there is nothing in them to respect.