Hah.
I'm getting flashbacks to when I played EVE, and not good ones.
Anyway, as a generic pronouncement:
The higher your might and the more % damage bonuses you stack, the more you want to be looking at dual-wielding.
If you get most of your DMG bonuses as 1-hit activated abilities, it favors 2h, if its modals and passives, it probably favours dual-wielding.
The lower your might and the amount of stacking damage bonuses you get, the more you want to look at weapons with DR reduction, and vice-versa.
I still need to look at dexterity, but from what I understood from Sensuki's vids, the pronouncement that its only good on no-armor classes seems rubbish.