Beyond the BO numbers we also have: Rotten Tomatoes score, IMDB score, Twitter statistics, Metacritic score, Cinemascore, etc. All of those indicate a negative/"meh" reaction to the movie.
No they don't. They indicate divisive leaning on the positive side. Overall, i would say between 60-70% liked it, based on all indicators i've seen. Just the other day i posted data about the last 1000 RT reviews or so and around 67% were positve. Twitter reactions, even with a lot of negativity floating around, are still mainly positive. Nobody is debating whether or not the movie has been disliked by a lot of people. It has. But let's not call it what it isn't.
The fact is that a lot of people are easy to influence and predisposed to jump on bandwagons. With so much negativy floating around, it's easy for some people to lose the interest in the movie. You talk about "wom", but we can also talk about the influence certain websites can have on people. You open your fb and you see a website reporting how badly the movie has been received by critics. That's not exactly word of mouth, but it's the type of negativity that reaches a lot of people and can easily turn them off.
The problem here is that you're all assuming this is an audience thing. You're assuming people went to see the movie, hated it, and didn't recommend the movie to their friends. That's fair. But you're forgetting that a lot of people had no recommendations from friends. Some people just read the news and decided for themselves that the movie isn't worth watching, since critics say it is so horrible. It's not just that people didn't come back for a 2nd viewing, it's also that a lot of people didn't even get to watch it one time.
My mom has taken me to watch Batman movies since i was very little. Now i don't need her to take me anymore, but she always shows interest in seeing the new Batman movie, so i taken her in my second viewing. This is the only time she hasn't asked to see it. Why? She doesn't know anyone who has watched the movie. But she has certainly read news and reviews. So yeah, RT, critics, fb pages, can influence a lot of people.
If you can't see this, well..there's really not much to talk about.