For a species advanced enough for trivially navigating the universe, the difference between the US and Afghanistan would be trivial. If they are more in the individuality side of thing (in contrast to hive mind), the dumbest of their lot would probably be smarter than the smartest person we can find here, probably looking at us the way we look at other intelligent species.

To measure us, would they look at the capacity to produce tech or consume tech (they would probably be more interested in East-Asia than North-America)?

If they look at introducing themselves and communicate peacefully, what metrics would they look at to determine what society they want to deal with?

If they look for dominance, once again they would hit where we produce tech, and hit our means of communication, which are worldwide.