I don't know about the BR issue, having never read it myself (and for the same reason I didn't read tHG until a couple months ago, despite hearing a lot about it - the gladiator tournament in a dystopia is not a very interesting topic to me), but if it is superior to Collins' work, I don't see how that proves she ripped it off. If the later work was superior, one might argue that she's building on a better work, but to criticize her when there is no proof of exposure to such a relatively obscure work (also, BTW, among the more pedestrian-read of us, tHG has been the best thing that could have happened to BR, since I never have heard of the latter except in the context of discussions of the former) is kind of absurd.

Not being as able to tell a comparable story as well is not an insult to a similar work.