I remember when we did our Top 50 event a few years ago, we had several discussions about what constituted a 'different' version of a show and what didn't. Since I was administering it, I got final say, but I'm still not entirely sure some of my choices were right. On the other hand, I was very comfortable with some choices even though others disagreed. Much like defining precisely what is or is not a game show, we're all going to have our own internal barometer, and our choices may appear arbitrary to someone else.