lorewise it should remove shields from both units before a duel^^ I actually kind of like that ideaI'm pretty sure they can just make duel remove the shield before the first hit is delivered. :] Please do this.
I mean if Tourney Joust can remove it before doing damage then they can make Duel do the same for the card that uses Duel (but not for the enemy, ofc since he's already in a privileged position considering he gets the 1st hit in).