If you didn't see the Batman v Superman trailer, then click this link. There is no way you didn't, so moving on: what have we learned from the trailer, beside Metropolis and Gotham being sister cities, laid one beside the other?
A different kind of Batman
Until now, we've been treated with several types of Dark Knights, the kind of bored one from the Burton films, the over the top ones from the Schumacher era, and the ninja of the Nolan trilogy. Obviously, everybody has its preferences as to which one was the best. But this isn't the point.
The point is that Batman v Superman will introduce yet a different type of Dark Knight "“ and this will indeed be a dark one, a mean, violent, and (probably) resentful one. The Batman of Batman v Superman has no problem with torturing bad guys for information (as we see a thug branded with a bat sign "“ the shot ends with someone screaming"¦ as if tortured).
Furthermore, he doesn't necessarily seek justice "“ what he seeks is revenge for those that have fallen. He isn't a detective, as we would have wanted (it's still enough time for this, though) "“ he is a violent brawler, overcome by feelings.
As far as his mech suit is concerned, it is revealed that it doesn't have offensive capabilities. The mech suit of Batman v Superman is just something very hard, which can withstand the blows of Superman.
On the next page, coming from an alien planet"¦
