At this moment...
I have no hate for either DC or Marvel. They both have some great characters, and some pretty awful ones.
But, "At this moment", Marvel have made the better Live-action films, but, DC's animated films are better.
This is of course, a smidge of a generality (yes, I'm aware you shouldn't generalise).
I make this statement as an "Overall" quality standard, not just writing or production value.
A couple of examples of good and bad from both camps;
Good films; Avengers, Captain America: WS, JL: Doom and JL; Flashpoint Paradox.
Bad films; Hulk(S), Ant-man, JL: New frontier and Superman: Brainiac Attacks.
This is by no means a comprehensive list, its just my opinion (which I'm prepared to get a little flak).
By all means, agree/disagree and/or give your opinion.
Also inform me of any film that might be of interest.
(TV shows, I think are up in the air).