User blog comment:B214/Question and Answers 2/@comment-202.152.195.67-20140602125544/@comment-16281343-20140603004408

Dimension Lost's ability is to transfer anything to another dimension using the mist. When mastered, the user can spread the mist over an entire country and sent it to another dimension or the dimensional gap.

Dimension Create's ability is to create another dimension. Paired with the technology of the Devils and the FA's, it can create an exact replica of a place.
 * Note: All by itself, Dimension Create cannot create an exact replica.