People keep reffering to the 1978 Donner Superman as "Pre-Crisis", when he is not the Pre-Crisis Superman, he is Donner's own version. There are some pretty big differences between the movie Superman and the Pre-Crisis Superman from the comics.
- Pre-Crisis Superman was Superboy while in Smallville. Donner's was not.
- Pre-Crisis Krypton looked totally different from the Donner version. it was much more Flash Gordon/Jetsons looking.
-Pre-Crisis Luthor was a mad scientest, and knew Superman from his Superboy days.
-Pre-Crisis Superman was a bit more powerful than movie Supes, turning time back or not. In the movie it seemed like that particular task put a strain on him, where in the comics he could fly through time under his own power and do more spectacular feats without breaking a sweat.
-Pre-Crisis, BOTH Ma and Pa Kent die.
What's funny is that Post Crisis Superman has MORE in common with Donner Superman than Pre-Crisi does! Yet people cite the Donner version as being the Pre-Crisis version simply because it came out in '78, putting it chronologically 7 years before the Crisis was published. But by that time, the movie series was so ingrained in the public's mind, that John Byrne and Marv Wolfman made the new Post Crisis Superman resemble the movie version more than he ever had before.
-Post Crisis Superman's Krypton is a stark, cold world, where Jor-El wears flowing robes and things seem a bit more inspired by the Donner Krypton than the Pre-Crisis Krypton
-Superman never had a public career as Superboy Post Crisis
-Lex Luthor is now an evil business man, not a mad scientest. This was writer Marv Wolfman's idea, who was inspired somewhat by the movie Luthor, although a more poweful and less goofy version.
-Ma Kent is alive
The version we have now in the comics is kind of a mix of both versions, with some Donner thrown in. And frankly, that's what any reboot needs to do as well. There are 70 years worth of stuff, pick and choose the best.