No doubt it will hit a billion. I'm just surprised at how fast it's getting there. The question now is how much over a billion will it get?
The weird irony is that if it could play in China, it would have to be a different movie--there's just no way in its current form, with the current regime in China, that this kind of movie could be released there. So therefore, it would have to be a different movie. But that different movie isn't the kind of movie that could become such a lightning rod for debate, which is one of the factors driving the box office--so a China acceptable JOKER would not have done as well everywhere else.