Same here. :^^:
Man, I was watching my brother play, and he reached that betrayel point before I did. When I saw Zelos die, I didn't touch the game for a week. Finally once I picked it up again, I found it miraculous that the story branches... YAY FOR STORY BRANCHING!
From a gamer's perspective, I suppose the smartest move would be to take the Kratos path, who is the stronger of the two and learns Judgment (Zelos doesn't).