Also, in this one, the main character Luso Clemens is warped to the real Ivalice, as evidenced by the fact that he bumps into characters from FFXII, namely Vaan, Penelo, and Al-Cid Bher (I think that's his full name). Even characters from the "dream" Ivalice make appearances, like Ezel Berbier. So maybe the "dream" Ivalice wasn't a dream, it was St. Ivalice warped to Ivalice, and Ivalice consumed it with the power of the crystals. Destroy the crystals, Ivalice's hold on the town is released, and St. Ivalice reverts to its old self. So Ritz, Marche, and Mewt (the librarian from this one) were in a real Ivalice after all. Or maybe that one is like Roxas' Twilight Town in KH2?