Here's some possible news to make the Snyderbros happy. A recent test screening of James Gunn's Superman has revealed that the movie just isn't good, but will no-doubt allow the Gunn/DCU movies to continue. Oy.
Sneider claims to have met with a source who "knew multiple people who had seen Superman" and states, "[The] buzz is not good. I'm hearing bad things. I'm hearing 'you should be worried things.' It sounds like James Gunn is aware of some of the feedback."
Rocha also shared, "Someone who's seen Superman told me it has the tone of the first Captain America movie and the Mummy films. They said Nicholas Hoult is the standout and the film is 'decent' but a large chunk of the film was unfinished with only a third of the film's VFX done."
I wouldn't bet the house on any of this. Just saying.
Source: Comic Book Movie (highly suggest reading full article)