Based on that picture of Superman of Earth-2 offering that life to Batman, this makes me believe that someone more powerful is going to be the main villain in Infinite Crisis.
It would be interesting if they revealed one of the Endless as being behind this (After all, Sandman was vaguely a member of the DCU in a detatched sort of way...Batman was involved in the first arc of Gaiman's run, Sandman/Morpheus appeared in the first arc of JSA).