I don't really get why the BR fans hate Hunger Games. Aside from young people having to kill each other, they're not at all similar.
Because of the idea of it and Collins' refusal to admit any sort of inspiration.
It's not quite as simple as that. They're about kids who are ripped away and sent to a prepared arena to fight to the death in order to maintain order and prevent rebellion. There are similarities between the two books in particular, at least until HG exhibits broader breadth.
Like I said, I hated it before giving it a chance. Looked like an Americanized BR ripoff, which never is a faithful thing due to differences in narrative style and commentary between vastly different cultures.