There IS a difference IF any of the footage was shot with IMAX cameras (as was the case with the last two Nolan Batman films). IMAX film has much greater resolution and it's clearly visible, even on the Blu-ray--more so on the IMAX screen. However, in cases where the film wasn't shot in IMAX at all, the difference in quality can vary from almost nothing to significant. Depends on the conversion process. The sound, however, is almost certainly going to be better in an IMAX cinema.