dc universe get NO cosmic entites or reality changers
dc only earths heros and villians
dc can only have help from the earths past and present heros so and only earths green lanterns like Hal, John, ect......
Starwars get all sith, jedi, droids, clone tropers, bounty hunters, and ships including the death star
dc can not get help from other people on other plants
the fight takes place in the whole intire universe