Batman vs. Superman Comics
Some of the top criticisms of the movie, (aside from it's disoriented editing, grim and convoluted storyline, and bad supportive acting choices) was it's departure and unimprovement from the classic comics the movie pulled from.
Additionally, fans were disappointed in the departure of core values of their beloved characters. Superman is an appealing character because he is absolute power that is not corrupted, and is a symbol and ray of hope. The film version however is turned dark and depressing. Batman takes down Gotham's most heinous criminals, but refuses to kill them. There are only far and few instances where Batman intentionally kills, but in the BvS film, he probably murders 20+ people.
Check out the source material and make the decision for yourself!
Comics that Inspired the Movie
After the Vigilante Registration Act, Batman is forced to retire. Ten years later, and Gotham City has sunk deeper into chaos. Now as his city needs him most, the Dark Knight returns in a blaze of glory. And after facing off against his two greatest enemies, the Joker and Two-Face for the final time, Batman finds himself in mortal combat with his former ally, Superman, in a battle that only one of them will survive.
A comic masterpiece written and illustrated by Sin City creator Frank Miller, many iconic scenes from this book were recreated in the Batman vs. Superman movie. Be sure to also check out the animated adaptation, Batman: The Dark Knight Returns.
Deep underground, a powerful being is attempting to break free. He makes it to the surface and from there goes on a destructive rampage leaving many dead in his path. The Justice League confronts the creature but their best efforts are easily brushed off. Superman joins the battle and the seemingly unstoppable monster can take everything the Man of Steel dishes out and returns it 10 fold. If the Man of Steel can't stop him then who can?
This story is the first appearance of Doomsday, one of Superman's greatest enemies. While there is a "Doomsday" in the Batman Vs. Superman movie, he is very different from the actual character. A historical comic with huge ramifications afterwards, this series also received an excellent animated movie, Superman: Doomsday.
If you want to read a comic series with Batman and Superman getting along, and developing their friendship, check out the following!
The Dark Knight and the Man of Steel are close friends in the modern day--but the two weren't always such close allies. Discover how two of the World's Finest Super Heroes met for the first time in the New 52, and the mysterious adventure that takes them to a whole new world-the world of Earth 2! The heroes of the main DC Universe meet their Earth 2 counterparts for the first time!
The original Super Friends, and the movie DC is scrambling to put together in wake of The Avengers success, The Justice League is testament of teamwork and friendship. There are many variations of this super team including The New 52, Justice League of America, and the series based off of the awesome television show that's not just for kids, Justice League Unlimited.