DUH! The winner of the duel would get the deer.
(...but I don't think you can use the other guy's tag.)

Just kidding, of course. That's one of the hardest hunting situations I can imagine; trying to figure out who did what and who gets what. Makes me want to hunt far away from everybody else. Come to think of it, that's where I want to hunt anyway.

This same question came up in anotherthread recently.
http://www.huntingnet.com/forum/tm.aspx?m=1760415&mpage=1

Edit: I just realized you started the other thread too. Sorry.
I'll leave it up there anyway since there were some good responses that some guys may not have seen.