It appears that the quote was just meant as the best hook for the idea they could come up with, and it seems it does not reflect anything directly about the story.
We really have no clue how much Batman they will use. They already had a Wayne Enterprises Satellite in MOS, so bringing in Bruce Wayne is not exactly shocking.
I really hope they do not show Batman at all until near the end of the film, but we will see.
Actually, on one level I am encouraged by this. Before this announcement I was afraid they would try to make MOS2 and even bigger fight movie than MOS. As much as I loved MOS, I am not at heart a super huge fan of unending action. So Batman being there gives me hope they will keep up the excitement in a different way. We shall see.
I really hope it is a Superman movie with batman appearing. The return of Lois, Perry and Martha gives me hope for that, but having those three in the film and giving them significant roles are different stories.
