[Gimli]

True, but at high levels, dualing doesn't have any advantage since the game has a cap on the number of attacks you can make per round. Once you hit 5 attacks (whether through level alone or level plus a haste spell) you'll do the same # of attacks with a single weapon. Plus you could take the -4 from dualing and apply it to the expertise feat for a +4 AC bonus. To me there are 2 benefits from dualing. Early in the game it's nice as it effectively doubles your attacks (but your BAB is bad too, and early on it will cause alot of misses); and you can get any magical effects from 2 weapons at once, that's probably the best thing about it.