WB don't so super bowl spots. Troy, Speed Racer, Poseidon, Batman Begins all got them and disappointed opening weekend. The Dark knights and Harry Potters didnt, and opened huge anyway. They're not that important any more. If you hit a home run with it, it can be effective, but it isn't the 1990s anymore, when ID4, MIB, Godzilla all got them and instantly became the summers most hyped films.
Besides, the trailers aired before 2 films which combined to make ~750m in the USA and near 2 billion world wide. Exposure its going to be much of an an issue.