I've read a few of the first issues from a number of series, such as Marvel's Iron Man Vol 4 and X-Men: First Class or DC's New 52 Batman and older Red Robin series. The problem is, or so I seem to have found at least, that DC is much harder to understand.
My experiences are brief, but so far most Marvel comics are within the standard 616 universe and that is that. However, with DC, even the New 52 has a large number of references to the different universes (Earth 2, for example). It seems to me that DC like to have multiple universes. Superman/Batman and Injustice (I know that the latter is a spin-off as such, a tie-in to the game, but the principle remains) are two examples.
So, my question is whether or not anyone else has noticed this, and whether you think too that it makes DC slightly harder to understand?