As expected, Batman v Superman: Dawn of Justice dominated the Friday box office with $82.01 million. This is likely more than the rest of the films will earn during the entire weekend. It is also the record for the biggest single day in March, biggest pre-summer single day, and biggest Easter Friday box office. That’s where the good news ends. The film’s reviews remain just 30% positive, making it one of the worst recent tentpole releases. Worse still, its CinemaScore was just a B. That doesn't sound bad on the surface, but you have to remember that the CinemaScore is from people excited enough to see a movie on opening day. Anything less than a B+ usually results in weak legs. In comparison, Transformers: Revenge of the Fallen managed a B+ and had weak legs during the prime Summer season. Batman v Superman is on pace for a $172 million opening weekend, which won’t give it a good internal multiplier and there’s a chance it won’t earn $172 million during the rest of its domestic theatrical run. It will need a lively international run and a worldwide total of close to $1 billion to break even.