Batman vs. Superman: Heroes or Villains?

I saw this trailer when I went to the movies last week:

Seriously, am I to believe that the filmmakers of this movie want me to see Batman as a villain? The idea of Ben Affleck playing Batman sounds villainous enough to many, har-har, but the only other option is Superman as a villain. I know that can't be the case. Under no circumstances is Superman the villain. Ever. When I see red white and blue I know the good guys are here. Call me jingoistic, call me simplistic, call me out of my mind, I do not care. Superman = America = the good guys.

Worse, am I to believe that Batman, who has no known superpowers except maybe great hand eye coordination and some killer gadgets, is match for Kal-el son of Krypton? I'll believe it when I see it.

(By the way, who's that heroine with the shield and sword? She can bang me around anytime.)