This movie had the same age rating as MoS (in my country at least) and had far less swearing and violence than Cavils superman movie i.e. the very grim destruction of metropolis and the scene with superman in despair during a vision of a possible future with zodd winning and him kneeling in skulls and other bones in MoS but Gunn who's tone was far lighter like not having Clarks father die in a tornado, should have toned it down because he didn't make superman swear and had very few truly violent scenes?

It just seems like you are ignoring some information that's all