Marvel characters fought many of Thanos' minions and scraped through just about. It made the arrival of Thanos even more scary and when he turned up, you really did feel like he was an actual threat to the heroes.
Darkseid has already been defeated by a group that didn't include Supes, Batman, Cyborg, Wonder Woman, Flash etc. Are we meant to believe this guy to be a threat?
I want DC to just make stand alone films/series of films like Joker and Dark Knight. That's where they tend to shine.
Then eventually use Flashpoint to have them meet up.