Worlds collide in “Batman v Superman”

Zack Snyder‘s thundering and grim “Batman v Superman: Dawn of Justice” offers the kind of blunt, mano-a-mano face-off usually reserved for Predators, Godzillas and presidential candidates. And just as has often been said of this election year, “Batman v Superman” takes a once almost charming tradition and plunges it into the gutter. Long gone are the telephone booths, corn fields or any other such tokens of innocence. And given the prevailing climate, Snyder may have judged the rock’em-sock’em moment wisely.…