"Star Wars: The Force Awakens" today will surpass the $760.5 million domestic haul of "Avatar" to become the top-grossing film of all time in North America. However, any hopes it might seize the James Cameron blockbuster's global crown have begun to falter.

According to The Hollywood Reporter, "The Force Awakens" added another $8 million to its domestic tally on Tuesday, bringing its total to $758.2 million in just 20 days. "Avatar," on the other hand, brought in $750 million during its original seven-month run, and added another $10 million or so to the coffers during its theatrical re-release.

As of Monday, "The Force Awakens" had grossed $1.54 billion, a figure made even more impressive when you consider the Disney sequel doesn't open in China until Saturday. But even with box-office boost from that market -- estimates range from $175 million to $300 million -- it's beginning to seem unlikely the film will surpass "Avatar's" $2.78 billion.

Observers suggest "The Force Awakens" may end its run with a worldwide gross of $2.2 billion to $2.4 billion, enough to displace "Titanic" at No. 2, but still short of the all-time record.