Lex is going to bring Bruce Wayne into things when he reaches out to him as another person whose business was impacted by the actions of this reckless dangerous alien thing called Superman. And I'm going to bet that Lex is going to be presented as someone who sways a good deal of public opinion to his point of view. I don't think he's going to be an overt villain. I think he's going to be using Superman's actions to make him into a threat, and I think doing so is going to benefit Lex in every way.

The great thing about casting Eisenberg is that it removes any question of a physical confrontation from the equation. If Superman hits Jesse Eisenberg, even once, he is dead. Period. He'll be a stain. It'll look like someone stepped on a grapefruit. That's all that will be left. There's no contest there at all, and Superman knows it.

Can you imagine Jesse Eisenberg standing face to face with Superman and calling him a murderer? Calling him out for every person he failed in "Man of Steel," bitching him out for every building destroyed, every dollar lost in the mayhem? Knowing full well that Superman can't do anything to him without looking like a giant super bully? The same is true of Affleck as Batman. He can't beat the hell out of Lex Luthor, no matter how much he might want to wipe the smile of his face. Luthor is a threat they'll both have to defeat in some way besides a big boss fight, and that alone is reason to be excited.