It was always going to outgross Deadpool and it was always going to open big. Anyone who thought otherwise was being delusional. Deadpool is R-rated and had no 3D. Batman v Superman contains three of the most iconic super heroes, is PG-13 and has 3D. Just because it got shitty reviews didn't mean it was suddenly going to bomb. However it's legs might not be as good had it gotten great reviews, which is what everyone is talking about.