From what others are saying, Dual Wielding is more damage than a 2-Hander.

My Pally/4x DK team hasn't been on since the mid-part of 4.1.
The only changes really are likely Mastery > Haste, Dual-Wield and take Blood Strike out of the rotation.

I took about 6 months away from the game.
I'm in the process of gearing my Druid team, Resto first (thanks to that video by Cyberus) and then Feral.
Will level the Shammies (80th now) and gear them too.
Then hopefully the DK/Pally team has enough time to gear up before MoP arrives.