I scored a 21, but a) I don't like manipulating other people, b) I don't like being the loud center of of attention, and c) I don't like people prying into my life. Most of scores came from self reliance, belief in my own abilities, and my fascination with being in tip-top shape. Well, if what I consider to be positive traits makes me a narcissist, then so be it.
I can see if I give this test to some of my co-workers, they might score off the charts. They all got blogs and legions of fans, talk really loud, have lots and lots of opinions, and like to be the centers of attention. For me, these things are the means to the end of achieving superior performance in work and play. You need to influence and lead other people because you can't do everything by yourself, but these aren't the ends in themselves.