I have to disagree. The Prime Minister of the UK has more political power than the Queen, even though she is superior in rank. The President of the US has more power than the President of the Congo, even though they are equal in rank. A title that holds no power is simply a title.
According to your scale though, the Queen would have a higher "political score" than the Prime Minister. That's the issue with simply counting knights. If it doesn't tell you that the Queen does not hold actual power, then it's not a useful ranking.
