I've just started getting around to reading Convergence and (most) of it's Tie-ins and I had a question about the bottled cities and the different stories, like the ones that take place Pre-Flashpoint or Pre-Zero Hour and such. Do the bottled Gothams in the Batman and Robin and Nightwing and Oracle the same bottled Gotham because they are the same Pre-Flashpoint Gotham or are they different Gothams from different times? The art is different so I couldn't tell if the artist just took liberties with the characters or if they were different versions of the same character. Another thing that makes me question if it is the same Gotham is that in both stories they mention Poison Ivy created a garden to help feed the city.