I kinda knew that someone would do this. I go with Wonderland.
Alice is much more of a fighter than Snow White can ever dream of, and will easily defeat her with superior weapons and armor along with a shield, She killed a intelligent talking dragon! Snow White has The Huntsman, which could make a difference in the fight, but he may be overpowered by the much more intelligent (although psychotic) inhabitants of Wonderland. The White Army of Wonderland can take out Snow White's Knights, and again, intelligent creatures will be a major blow to Snow White.