I’ll say again, there are good films and bad films.
Surely they are simply films you like and films you don’t like?
Leaving aside my own personal preferences, we do have professional critics and aggregator sites like Rotten Tomatoes (though far from perfect).
Time is usually the best judge. When the marketing hype and internet chatter has died off do people still regard it as a good film in 10,20,30,50 years time.
Have you seen any of those films or even Suicide Squad? The ones that you have listed 4 possible 5 should have been shortened as the extra time only added to arse ache and not the plot.
Your point was that comic book movies can’t be long and it was not financially viable. I wasn’t chosing them as examples of good films, merely examples of very long, but incredibly lucrative films to counter your irrelevant point that “people won’t sit through an action movie that long” and “studios know this and cut films accordingly”.