Endgame is part of a massive franchise, is a direct sequel, and doesn't have the novelty of the original Avatar. I have a hard time believing any Endgame re-releases will drum up much excitement.
I also expect an Avatar re-release in more territories before Avatar 2 comes out (if it ever does). So I think Avatar will stay on top for a while.
Plus Hollywood studios have decided to sacrifice the box office to the altar of streaming subscribers.
http://www.youtube.com/watch?v=F1gWECYYOSo
Please Watch/Share this video so it gets shown in Hollywood.







