I don't know if anyone else mentioned this, but one very minor plus to Miami's score -- they played us twice. Playing us twice boosts their SOS more than it boosts ours because we have a better record.
That won't make much of a difference over the course of a season, but it does show a problem with comparing two teams early in the season using SOS.
The positions shouldn't be taken literally since the difference between scores, even if there were an amazing metric, would only be an approximation. It would put teams in the neighborhood of where they belong at best.
This gets back to the point that his metric is meant to be a different perspective. It is meant to point out the other factors that people might miss when look only at a teams record.
Chicago may not have the greatest record, but they have had the highest SOS.
NY may have a record that exceeded expectations, but they have played the second easiest schedule in the league (though, to their credit, they are +2 road games). Even with our game Weds they are that low on SOS.
Don't worry about the ranking. Instead, enjoy the other sortable stats, like the SOS or Margin in the last 10 games/last 25%. Those can help explain why a team is hot.