Or that it's easier for more Danes to migrate to the US than vice versa because they're more familiar with the language and culture of the US than vice versa.

Or that it's easier for more Danes to migrate to the US than vice versa because they're more familiar with the language and culture of the US than vice versa. There are so many potential reasons; it's silly to draw conclusions about what country is "better" (on some underspecified scale) based on just migration stats.