I've never seen a Superman film in my life, but when I heard James Gunn was going to produce the new movie, I decided to give it a chance.
I walked out of the theater extremely impressed. It truly feels like a 2 hour comic book, which is the exact tone it needed to hit to stand out.
If you've considered watching it, I really recommend it. Very campy and cheesy at times, but it takes it with pride and I love that.