Nowadays, every run ofg the mill book/series that gains the slightest popularity is inevitably compared to Harry Potter.

I'll be the first to say (to many indignant cries from THG fans, I'm sure) that Hunger Games does not deserve this honour. And I'll give Du three main reasons for it:

First: PLOT
Or the seemingly lack thereof in the Hunger Games after the first book.
While Jo's plot seems to thicken with every book, yet remains perfectly understandable, Collins' plot deteriorated rapidly in the last two books. They were thrown so haphazardly together that it felt that the Autor was following...