I am thinking the big reason that MOS numbers are at this level is because of the bad word of mouth. Rotten Tomatoes grilled this movie while metacritic said it was very average. Also, other known critics such as Richard Roeper gave the film a low score. Therefore, it would be understandable that MOS didn't make so much more money. I can almost guarantee that if the scores were much higher, it would have made it at least 800 mil+ WW.