I finally watched the Richard Donner cut of Superman 2 and liked it infinitely more than the goofy Richard Lester version. It was a far more modern movie, it flowed way better with the first one and weirdly the acting in it seemed so much better! I feel like the Lester version made the decision that Superman cannot be in a serious movie, and went the camp route, while Richard Donner had a bit more respect for the character and tried to put him into something resembling the real world. Now, this movie still had goofy and nonsensical moments, but for an 80s superhero movie it felt strangely... modern. I saw a lot of Zack Snyder's ideas in this movie - especially in Superman's self doubt when giving up his powers. His reasoning for giving his powers up ("why can't I live the same life as everyone else") is something that I wouldn't be surprised to hear from Henry Cavill's Superman. Overall, I see the Richard Donner cut as the definitive version of the movie now, and Superman Returns is a (shitty) sequel to this particular movie.