I think dual wielding owns single wielding even though single gives you 1 (depending on how many points you put in 2) AC bonus when you dual wield you attack a lot faster and enemies don't have as much time to hurt you. also there are a lot of AC bonus items. with my stalker i dual wield long swords/scimitars i chop enemies down very quicky, they don't get much of a chace to even think about hitting me back