The big four-way crossover bumped one episode of Legends of Tomorrow by a 0.6 share, then the ratings went back to normal on the next episode. If CW wasn't going to keep the show because of the ratings, one episode of higher ratings isn't going to change that. So… I'm not sure what you are talking about.

I don't really watch that many superhero movies, Deadpool, Doctor Strange, and Guardians of the Galaxy are the only ones I can think of having watched in the past couple years.

Oh, great, another damn crossover. Just stop it with that nonsense already.