I came to Justice League after the major disappointment of Batman v Superman, and after that, it doesn't require much to give a good impression. The film still cannot be compared to the Avengers movies from Marvel, but still, I had a good time watching this movie, and I would for sure watch any new movies in the Justice League series based on what I saw in this one!
This one did surpass Batman V Superman, but I don't think it's higher than that. I enjoyed it in the cinema when I saw it, I left there with a good feeling. Sure it doesn't live up to the Avengers movies, but for DC it's fine.