The cultural distinction between US+Canada and the rest of the Americas (usually called Latin America despite Jamaica), which is the divide they probably used, makes for more distinction in most metrics than the geographical division. Similarly, most polls about “Europeans” exclude Ukraine and Belarus, not to mention the Western parts of Russia, Kazakhstan and Turkey.
The cultural distinction between US+Canada and the rest of the Americas (usually called Latin America despite Jamaica), which is the divide they probably used, makes for more distinction in most metrics than the geographical division. Similarly, most polls about “Europeans” exclude Ukraine and Belarus, not to mention the Western parts of Russia, Kazakhstan and Turkey.