@isaac_clarke: While the frost giant hammer strike IS impressive I have to take it with a grain of salt because...well it is a bunch of ice...
Something like miles of ice; either way it gives you something to work with given Thor really have no challenges worth mentioning in his own film. The major fight your expecting out of the Destroyer turned into him lifting it in the air, powering through it's laser beam and then caving it's head in a single strike.
Superman works them.
While we have no true definitive strength feat that puts Superman above Hulk and Thor (Best I could think of at the moment is the train feat and the oil rig feat), the combination of his speed, aerial superiority, durability, and heat vision should make for a clear victory for Superman
How about that eiffel tower showing from the trailer?