I think I agree that if there's no connection to the problems of both worlds then it's not a distinct trope. But does that mean that the point of this trope is actually about problems that span more than one universe or are caused by there existing a connection between two universes? Maybe it's sort of the same thing since if you're going to introduce a problem like that into the story, then convention suggests the hero will have to save both worlds by the end of the story?
I'd be inclined to try to answer my own question by checking the examples, but I'm not familiar with them and don't understand why they're divided the way they are, plus so many are zero context or too little context. Is anyone familiar with enough of the examples mentioned to venture a guess about the sorting or add some context?
edited 20th Sep '13 7:43:42 PM by StarValkyrie