Country Duel: Denmark or Sweden?

Rivalry between these two might not be that widely known throughout the world but Denmark and Sweden has a common history full of bloody battles. As you might expect both of them are nowadays very succesful at keeping high standard of living. For this duel we are (unfortunately for Denmark) excluding Greenland (Biggest Island in the World, under Danish rule), because it would be much harder for data collection. And as always I have to emphasize that I am not saying that one of them would be better than the other.