Well, it's quite a coincidence, I must say. . .particularly given Snyder's obvious reaction against criticism levied toward Superman Returns in Man of Steel, WB's obvious reaction against the MCU's success by forcing a team movie and integrated universe together, WB's obvious reaction against Green Lantern's flop by going all "dark and gritty," etc.
Well, Snyder and friends do love their mature, violent, and "realistic" comic books. The Authority epitomizes that approach, and its version of Batman and Superman are lovers.
I expect the fight to end like this in the director's cut