Looking back I do have to point out what made them uniquely different and extremely familiar to the movies...
Batman was great cuz it told so many amazing one and done stories. It had continuity... But the stories were mostly wrapped up in 1 or 2 episodes. Which is also how DC movies best work.
X-Men in the other hand tackled huge stories over a season of episodes. House of m, Phoenix, apacolypse, .... Marvel from the jump has specialized in large epics featuring a universe of characters...
While DC always shined in smaller contained stories