There's another cut of the Superman 2 where Zod gets arrested, That said, I don't like that scene.
The thing is: it's all about tone, the mot elusive aspect of making a film.
Sure, in the original cut of Superman 2, Zod fell to his death, and Superman killed him. Sure. That's what happened. But here's where tone came in. The original films were wholesome, standup films for the whole family, and they looked and felt like living, breathing comic books, and things in that film happen according the rules of a comic book. And in that world, people die. Sure, but there isn't a dark, grim, cloud-like feeling of depression we feel because of it. Notice how Superman kind of salutes.
But Nolan and Goyer had to try all of our patience by having pain, agony, catastrophic 9/11x200 level destruction, burning eyes, neck snapping and screaming in a reboot of the most wholesome comic book character of all time.
Thanks guys!