m8 it doesn't matter if it does even half as good as a real movie.
Look at the trailers, they're barely putting more effort into it than an average episode. It's a flash animation produced by a handful of people, shit's cheap as dirt to make.
All it takes is a bunch of parents dragging their kids to see a cartoon movie, which is exactly what's going to happen. Fucking Smurfs 2 made over $350 million despite the bad publicity of Smurfs 1, which made over half a billion itself, because of parents just going to whatever the fuck child animated movie is airing with their kids.
I'm completely neutral towards TTG, I honestly don't give a shit about it. But if this movie doesn't at least break even it's going to be one of the biggest flops and anomalies in the fucking history of film.