Even if I win, I don't leave the group, so what's the point? But in general, he's being true to himself.
If I win, both he and I will have 2 points, and the kill/bonus ratio will be 3 for both, and in this case, the head-to-head result will be in my favor, so why wouldn't I win then?
Of course, he's being true to himself, but whose else should he be?