The correct answer to this open question is the following.
The political similarity between Suleiman the Magnificent and Emperor
Justinian of the Byzantine Empire is that both emperors established important legal codes to rule their respective empires.
In the case of the Byzantine Empire, we are referring to the Justinian Code. Emperor Justinian ordered to review the many laws that existed in the Roman Empire to come with one Romal law code. In the case of Emperor Suleiman, he established legislative modifications in criminal law. This and other kinds of reformations in education and economy made possible the golden age of the Ottoman Empire.