Re: Batman Vs. Superman... can this be a fair physical fight?
No. Of course not. Without Kryptonite or some other equalizer (for example, during the DKR fight Superman had also recently been nuked and a small-scale nuclear winter had greatly decreased the amount of sunlight Superman was getting), Batman stands no chance in a actual fight.
Therefore, the fight between the two (which I figure would come near the middle of the movie, with the climax being a team-up against Lex or whoever) would either have such a equalizer like Kryptonite (I liked that idea of the World Engine creating Kryptonite on Earth, BTW) or it would be more of a battle of wits and wills until they both realize they are being played. Perhaps it would end with Superman having basically defeated Batman with a light tap and then Batman would say some sort of thing that makes total sense and makes them realize how foolish they are being, or something.
Marvel. DC. Indies. Who cares? Can't we all get along?