With the top domestic gross of all-time now out of the way, the story turns to whether or not The Force Awakens will have enough legs to make the $1.2 billion more that it needs to overtake Avatar for top worldwide gross. I think we'll see what legs it's going to have in the US after this weekend, while the China opening tomorrow should give us an indication of how the international market is going to go.
At this point I'm honestly not sure it's going to beat Avatar, unless it somehow demolishes the record books in China. The top US movie of all-time over there is currently Furious 7, which brought in 2.427 billion Yuan, which is just a bit under $368 million US. If The Force Awakens manages the same amount, that still wouldn't be enough to come close to Avatar.