Wow. I feel so bad for Harry and Draco in the other world. I agree with 'our' Harry that the other Harry is being a coward and is not really going to be happy. I'm also glad that the other Draco doesn't slip back into his apathy. I like the more subtle clues you give us to differences, like the fact that Hermione is not as cold in this world and James is the same in both realities.
Overall this is a brilliant story and although I'm happy to reach exposition portion - I'm (as always) sorry to say good-bye to such compelling and engaging characters.