Nuclear bombs are not made by ACME. The 1960′s Adam West Batman may have had a lot in common with Wile E. Coyote, but Nolan’s Dark Knight series is deeply invested in realism. If a bomb detonated over the bay 6 miles out of Gotham, there would be no happy citizens the next day. That bus load of children who watched it explode would have suffered permanent damage, and Wayne Manor would have ended up as a hospice for blind, irradiated orphans. So why was I willing to suspend my disbelief about all kinds of other unbelievable things, but not about a nuclear bomb going off that close to Gotham and everyone being just fine and dandy the next day?