I'm very much an MBTI noob, but my understanding is that as judging-feelers with an Fe dominance, ENFJs interact with the outside world by aligning themselves with the feelings and values of those around them. For example, their first subconscious instinct in approaching a group would be to sense what the other members seem to feel or need, and respond accordingly. In that vein I'm assuming ENFPs are the reverse: in their mind the outside world is a place to share their internally-derived values and feelings with others more than a place to glean them from others...in a simplified sense making them more the talkers than the listeners! Or to generalize it another way, ENFPs crave being the center of attention, while ENFJs are inclined to let others have the attention and observe what they say or do.
If this is true, how would they compare in a leadership environment? I know ENFJs are often cited as natural leaders, ENFPs less so (Ronald Reagan and Bill Clinton being exceptions). For example, are ENFJs typically the careful listeners, who guide in gentle ways with careful attention to manners and guidelines - while ENFPs are more blunt and outspoken, even iconoclastic, more apt to impose their own ideas than to glean the ideas of those around them?