There is no Honor in this game. It's a team-based game mechanic. Your team wins, you progress faster than those on the other team. I'm not going to stand by while two girls sally one another away and fight while the rest of us serve to protect their duel. Screw that.
I would rather stick my pike in there, kabob you on it, kick you off my pike and grab the teammate who was busy to do something productive like, I don't know, help the rest of us actively engage in team warfare? I understand where you're coming from, but dueling is counter-productive in all gamemodes (of course not Duel servers). Your goal in battle is to eliminate your target as quickly as possible and then go on to the next one and hope your teammates can do the same. If I see a teammate tied up with someone, I'm going to kill that someone, and save my teammate whether they wanted to duel or not.