21. Both films have a black woman complaining about the actions of the superheroes, Superman and Ironman, near the beginning of the film.
22. Both films have conflicts based on a what-ifs. Batman attacks Superman because theres a chance he will destroy the world. Captain America didn't sign the Sokovia Accords because there is a chance they will change their agendas.
23. Both films takes place in multiple continents. BvS have North America, Africa, and Asia. CA:CW have North America, Africa, and Europe.
24. Both films have two males heroes exchange a few words about a woman before the final battle. Batman and Superman talked about Wonder Woman. Captain America and Winter Soldier talked about Dolores.
25. Both films have superheroes that also portrayed Marvel superheroes on Fox films, Batman to Daredevil and Captain America to Fantastic Four's Human Torch.
26. Both films have a superhero thats fully CG, Batman's armor and Spiderman's suit.
http://mcuexchange.com/spider-mans-suit-in-civil-war-is-100-cg-in-every-shot/
http://batman-news.com/2015/10/25/ben-affleck-batman-v-superman-cgi/
27. Both films have one female superhero per team. Black Widow on Team Iron Man, Scarlet Witch on Team Cap, and Wonder Woman on the JLA. Neither follow the "Designated Girl Fight" trope.
28. Both films have no American, female superheroes. Black Widow is Russian, Scarlet Witch is Sokovian, and Wonder Woman is Themysciran.
29. Both films are based on comic books stories, instead of having an original story line. BvS is based on The Dark Knight Return and Death of Superman. CA:CW is based on Marvel Civil War.
30. Both films were advertised as a battle because of ideologies, but weren't. Superman is fighting because Lex kidnapped his mom. Batman is fighting because he succumbing to dark side. Captain America is fighting to save Bucky. Iron Man is fighting out of guilt, and later to avenge his parents.