After DC launched the new 52 not all the books remained for long. 6 books were cancelled and 6 new books were produced and 2 of those books from the Second Wave dealt with a completely new universe, those books were Earth Two and Worlds Finest.
Earth Two deals with a new portray of the Earth 2 Universe and gives an spin to the JSA concept, while WF deals with the Supergirl and Robin of this same universe now stranded in the main DC Earth, and it is just not very good. In fact it really sucks.
