Superman: The Movie is my all time favorite movie. So it gets a 9. (Docking a point for spinning the world backwards...)
I did really like Superman Returns...but I'm going to have to give it a 6. I wanted to like it more, and I see it's potential, but I have to take points for the following:
Lex Luthor. His goal was exactly the same as it was in 1978 albeit on a grander scale. And his plan was flat out insane.
Way too much was cut out. And from what it looks like, the story may have really suffered.
And there was no relationship between Lois & Clark. None. I expect a little more chemistry between them in this day and age.
And the backstory was non-exsistant. This is supposed to be a sequel to Superman II, but if that's the case then either A) Lois should know that Clark is Superman, or B) She should have no idea how her child has powers. Remembering sleeping with Superman, but forgetting the secret identity. In terms of story, you can't have it both ways.
Superman: The Movie owns SR in every way. And Singer has proven that he's no Richard Donnor.