I think all of you didn't see the two-handed weapons in Diablo 3. For example:
2 handed daibo for monk "The Clouds and the Moon" for 37lvl has only 73-85 dmg
1 handed fist weapon for monk "Scarbringer" for 36lvl has 70-87 dmg!
So what's the point in using two-handed, slower and weaker weapon than fast one-handed? I think two-handed weapons should have MUCH higher dmg since they're slower (that's the point).
And it's not only on low levels:
60lvl one-handed fist "The Fist of Az'Turrasq": 332-447 dmg
60lvl two-handed daibo "Rozpedin's Staff": 438-608 dmg
I know it's higher but it should be like 1k for a 60lvled two-handed weapon.
In most games that's the way it should be (example: Diablo 2)