To be fair, this is how the worldwide list looks like:
HP8 - 1.341 B
TDKR - 1.084 B
Aquaman - 1.077 B
The Hobbit 1 - 1.021 B
TDK - 1.004 B
HP1 - 975 M
HP7 - 960 M
The Hobbit 2 - 958 M
The Hobbit 3 - 956 M
HP5 - 940 M
HP6 - 934 M
HP4 - 897 M
HP2 - 879 M
BvS - 673 M
Inception - 828 M
WW - 821 M
FB1 - 814 M
HP3 - 796 M
Suicide Squad - 746M
Matrix- 742 M
Their WW top 10 is made of: 4 Wizarding World movies, 3 Hobbit movies, 3 DC movies.
Their WW top 20 is made of: 9 Wizarding World movies, 6 DC movies, 3 Hobbit movies, Inception and Matrix.
DC is big but aside from Aquaman (which was lightning in a bottle) none of the post-Nolan DCEU movies have truly been huge OS. And as it is obvious by this list (and the general WW list), that if you want to push for the big leagues you need to do phenomenal OS (unless you are SW). Hollywood is a worldwide business. DOM is just a country (or two, Canada being included).