Prior Show And/Or Movie Comparisons
All of this Hunger Games/Battle Royale comparison hissy fits reminds me of the arguments back in the day about whether Star Trek: Deep Space Nine was ripping off Babylon 5, or vice-versa.
My advice: let it go. The IMDB message boards have more important things to discuss, like who is going to be the next James Bond.
Wherever you go, there you are.