DC will shatter all box office records with BvS...in all hero cinematic universes past, present and future, that is the one most anticipated movie of all time.
Then Marvel's Civil war will come quite close. Those two will stand out from the rest.
For overall success, i think it will be Marvel...it has a longer line up than DC. And since it's highly likely that all their movies will attract roughly the same audiences, Marvel will rake in more profits.