Some DC films suck big time, Marvel films are almost always good but too often generic/formulaic, Aquaman was awesome, and Captain Marvel was very good. I love all comic book films, I mean liked Venom despite that it was worse than Suicide Squad. I grade all of them on a big curve.
Both sides have unreasonable fans that root for the failure of the other which is insanely dumb if you like to watch SH movies. I hope Captain Marvel does over a billion and I hope Shazam shatters all expectations just like Aquaman did.