In the English story, Sonic doesn't recognize Cyber Space as Green Hill Zone when first heading into it. In the Japanese story he does. In the English story, The End refers to Sonic as "mortal", in the Japanese story, he is referred to as "the creature of potential". In the English...
Here is the text of the English narration, heard in voiceover at the beginning of the film and of each sex scene (except scene 3, where there is only dialogue with subtitles). Beside offering great involuntary humor, it provides full identification of who does what to whom (the opening cr...