Why use the name of a famous comic if They seeks to do a radical different thing?.

The true "Civil war" comics have several important events that never come to happen in this movie. Starting with the nuke explosion caused by masked vigilante at the city residential area, the betrayal of S.H.I.E.L.D. to Captain America, the super hero battle that ends in The Giant Man's death by the hands of Thor's clone, created by Reed Richards and Tony Stark, and many other things because I should say this no Civil war but something else.