The ENTJ portrait from personalitypages.com meshes perfectly well with much of Elf's self-description:
"ENTJs love to interact with people. As Extroverts, they're energized and stimulated primarily externally. There's nothing more enjoyable and satisfying to the ENTJ than having a lively, challenging conversation. They especially respect people who are able to stand up to the ENTJ, and argue persuasively for their point of view. There aren't too many people who will do so, however, because the ENTJ is a very forceful and dynamic presence who has a tremendous amount of self-confidence and excellent verbal communication skills. Even the most confident individuals may experience moments of self-doubt when debating a point with an ENTJ."
It's nice to feel respected. Of course, as the last sentence indicates, he has done a good job of trying to break my confidence in his e-type. And of course I have experienced self-doubt during the course of reading his responses. But in the long run, I feel that I am in the right by maintaining an objective stance that takes into account all the evidence he has presented, and not just the evidence that supports my position.