When I used to have uh, frank discussions with my ENTJ partner, he would often "win" because I gave up, partly because he was sometimes too dismissive of alternative views, but mostly because I never really gave enough of a shit. But really we argued very infrequently.
When I "won" it was because I was in that kind of mood where I'm just loving the mental and verbal workout of purely having the discussion, and I don't care what it's about or who wins, I just want to keep it going cos it's a platform on which I can sharpen my wits. So whatever the other person says, even if I agree, I'll counter argue it anyway, just to see if I can, and to see what they'll say, to see if I can counter argue it, etc... this tendency is what I think lies at the roots of the common misconception of me "needing to win" - it's not that that makes me refuse to stop pursuing it, it's the fact that I'm enjoying simply being able to work out my ideas and thoughts the way that's best for me: externally.
It can go on forever with an ENTJ though cos they're the ones least likely IME to either back down, or start blubbing and taking things personally. There is a tendency to reductio ad absurdam though... which is annoying, but not as badly as the STJ's do it.
I really love arguing with ENTJs
