It's somewhat confusing since it's generally the extrovert's role to initiate contact, but the victim's role to submit. Conversly introverts are are more naturally receptive while aggressors more naturally dominate.
The only way I can think of this working is that ENj might toy with ISj to try and get them to control and stop ENj's sometimes manipulative or vindictive behavior. I find that I tend to taunt or pick on girls that I'm interested in (in a playful way of course ) and respond well to someone who will fight back and give me that "don't even mess with me" vibe. I like to play the asshole and pretend that I'm in control, but if I was with someone who was submissive I'm not sure that I would know what to do with that. I would probably feel uncomfortable and start playing the nice guy because I'd feel bad.