I agree that both the map and the statistic I’ve posted don’t take those country-specific characteristics into account.
I’m not sure how important that difference really is, though, as both the US and Germany seem to have pretty similar degrees of urbanization (US: 83.3%; Germany: 77.8%; source). So the rural population isn’t really that big in either country, relatively speaking.
I’m not trying to say that the rural population isn’t a factor, I’m just not sure how big that factor really is.
The source for this data is Equaldex. According to their data on Sweden, for example, the following things are rated negatively:
They might also take their public opinion section into account for the country‘s overall score, but I haven‘t looked into that more thoroughly.