Frost DK dual wield or two handed?

Hello, im just wondering if frosk DK's are a dual wield or a two handed spec in 3.3.5.

Na, 2 1h is better usually, unless you have like ilvl251 2h and 2 ilvl219 1hs, then you might as well go UH.
Can't say it's always better, but it usually is. Cause Obliterate (talented) and Frost Strike attack with both MH and OH, 2 1h allow you to have both razorice (10% frost dmg) and fallen crusader.
I don't have the numbers but 2 1h just seems better cause some attacks and talents affect both MH and OH (like that one for 3% hit on 1h weapons)

That sucks, I hate the dual wielded frost in Legion and BFA and was looking forward to playing FDK as a two handed again. But whats the point if im gonna do less dmg...