i've heard mixed reviews about this. apparently, footage from the first movie is intersperced with this new cut (like the time reversal sequence). i'm seriously doubting this version is better than the original.
I bought it today. It IS better than the original. Here's exactly what it is...
Unlike many "special edition" and “director’s cut” movies released over the years, Superman II: The Richard Donner Cut is essentially a completely new film. As much as half of the film contains never-before seen material filmed by Donner, including 15 minutes of restored Marlon Brando scenes as Superman's father Jor-El as well as numerous new Christopher Reeve and Margot Kidder scenes.
There are also several newly-filmed shots with CGI enhancements. Richard Donner is credited as director of the film instead of Richard Lester—the original credited director of Superman II. More than half of Lester's footage filmed for Superman II has been removed from the film and replaced with Donner footage shot during the original principal photography from 1977-1978. Certain footage filmed by Richard Lester remains in sequences that were not shot by Donner due to the halt in production for this film.
Go here for more...
http://en.wikipedia.org/wiki/Superman_II:_The_Richard_Donner_CutIt's almost a new movie when compared to the original... Finally, Superman II, the way it was intended to be.