SW:BF2 let you play as Vader, Leia, Chewbacca, and a bunch of other popular characters. BF1 didn't have those (AFAIK), but it still had recognizable entities from the movies (Stormtroopers, clone troopers, rebel soldiers, etc). Without those, the games would have been Star Wars in name only. Do you think they would really have sold as well without all those well known assets? How many people know what a Mandalorian is compared to a Stormtrooper?