Way too early to tell where it ends up globally. Also, there is already a few other countries that Star Wars has beaten Avatar (Finland for example) a number of others that will very soon (United Kingdom for example) and it still way too early. Sure it probably won't have the same legs as Avatar, but we don't know. We have no movie in the past to base it on, to use their numbers to compare. It is in uncharted territory, as no movie has made this much this quick. Even internationally it is still too early to tell. And with China opening soon, that could change things, good or bad, too. To this point, no movie has performed even close to star wars, so whose to say what will happen tomorrow. You can make the numbers say a million different things right now.
I for one still think a lot is to be learned about how far it goes. There is still at least one, maybe two holidays in its future, and little competition, and people that keep seeing it over and over again. How will movie goers react if it is a hit in China, it may push the foreign market more. Point is we just don't know.