The issue with the Titan battle was that it was being directed by two haughty individuals who were unwilling to cooperate. They were destined to be dysfunctional with a team that had such a wide range of fighting techniques. You can see Iron Man and Star-Lord mirroring each other's positions during the negotiation. None of them were prepared to set aside their egos or act honorably by remaining cool and collected. Captain America is a take-charge leader, and war strategies are frequently left in his capable hands. People who are familiar with him have come to the conclusion that he is the ideal leader to follow. In essence, Star-Lord would engage Captain America in conversation rather than Iron Man first. Where Quill would get a strong sense of leadership from him. Either that, or Peter Quill would be familiar with Captain America because he is Earth-born and possibly a fan. In either case, I believe Quill would see his lack of authority. Iron Man and Star-Lord would certainl...