From the birth of the first film, the word trilogy has defined the biggest and best superhero movie franchise today; “Spider-Man.” Plenty of superhero movies have done it or are doing it lately, like “X-Men,” “Fantastic Four,” and the new “Batman” films. Three is a good number, but four is the number of yesterday’s superhero franchises, like “Superman” and the old “Batman” films. Those were the big greats, the flagship characters of DC Comics that led it’s universe to silver screen greatness.