Democratic Socialism and Happiness. The Nordic Model?

A Current Affairs article provides lots of interesting graphs about democratic socialism and its possible relationship to being able to have a contended life.

I like the article quite a bit, but I would like to see what happens if the five Nordic countries (Iceland, Norway, Sweden, Denmark and Finland) are removed from the graphs. 

It looks to me like the positive correlation the graphs suggest might be much reduced if we did that.  And that, in turn, suggests that perhaps the Nordic type of democratic socialism has something the other types do not have, or at least not to the same extent.  More equality between men and women, say?

Or it could just be that a cold environment makes people's brains work better when it comes to creating fair societies.  (Just kidding).