> Could it be that the distance between the top and bottom 20% is less in Canada You're just describing the results of inequality: two things are further apart

> Could it be that the distance between the top and bottom 20% is less in Canada You're just describing the results of inequality: two things are further apart than two other things. It doesn't tell you anything about the cause of inequality, only the magnitude of one symptom. It's like saying "a mile is longer than a kilometer". Well, yes that's an apt description but it doesn't tell you why that is the case.