The flip side of that is what intrigues me. Given their proximity and the fact I doubt the likes of Joker, Penguin, Riddler, Catwoman and Two-Face are probably no respecters of city limits, nor for that matter is Batman himself, I assume the Caped Crusader and his rogues' gallery have been a much a part of the Metropolis crime scene as Gotham's.Why has Superman never interfered in Gotham in two years' time? Not with Batman, but with crime. If the crime rate is so bad and it's that close to Metropolis, why does he spend his time in Metropolis? Not that the distance matters much — he'll go to Mexico easily enough.