I LOVE Battle Royale, but let's stop with the BS
So what if Hunger Games is like BR? You don't see people bashing authors and accusing them of ripping off Bram Stoker just because they are writing books about vampires, or others who write about haunted mansions of ripping off Shirley Jackson (who wasn't the first one to write about haunted mansions).
The story of BR is much better and exciting than THG, this can't be taken away from you. You people are simply jealous because the HG movies make hundreds of millions while BR (the movie) didn't get the recognition you think it deserves.
Now, get over it. It's not plagiarism, it's a story that has a lot in common with BR but also a lot of differences.
English is not my primary language, but at least I speak more than you.