Khan-----------------12
Ceasar---------------11
Kaiser----------------10
Tsar------------------9
btw: The three titles Ceasar, Kaiser and Tsar are all synonyms for each other. Ceasar=Kaiser=Tsar=Emperor
In the middle of the 16th. century a Khan was known as King of the Turks. The Ottoman Sultans called themself Kahn of Khans. Khan is definitely not higher then Emperor, it is just a king. Only the Khagan-title is maybe comparable with the Emperor-title.