There is no doubt that Alexander the Great is a larger military leader. But after his death (perhaps 33 years old, probably due to his ruthless lifestyle) his "empire" collapsed and his main officers fought each other. Alexander never set up a government agency and focused only on the conquest of the army.
When Augustus took power in Rome, the empire was nearly at its peak to the area it was dominating. Augustus's achievement was to adopt a clumsy form of Republican government and turn it into an effective monarchy to effectively manage the vast land that was occupied by his predecessors. Augustus established a relatively peaceful rule (if Romans often fought a civil war or a major foreign war, if you compare it with the previous 100 years you took it). Augustus established an effective government capable of managing the empire The vast territory of this age is an era that takes several weeks or even months for news to move from one end of the empire to the other .
Please note that the Cyrus empire covers most of the territory of Alexander the Great; in fact, at the end of his life Cyrus dominates more of the world's population than other rulers of history did. Cyrus can be said to be the most powerful person in world history. He knew that Cyrus is not enough to conquer this territory; he must also stick. Therefore, he organized the Persian Empire into a series of states called Satrapies. Every Satrapy will be governed by Satrap, it deals with day-to-day management of the region while still reporting to the emperor. This means that the emperor is not filled with such large imperial works, but you can still dominate his field in some way. This also means that the damage by incompetent emperors will be alleviated. This system is very effective, and each empire governs Persia and Mesopotamia in some way until conquest of Muslims in the 630s.
Cyrus is one of the most respected rulers in the ancient world. Alexander the Great, who ultimately conquered the Persian Empire, was inspired by the success of Cyrus in the construction of the Empire and kept building his own great empire. Thomas Jefferson is also a religious tolerance and a merciful worshiper of Cyrus, a minority of his empire. Cyrus the Great is an excellent military leader, a superior ruler, and an efficient administrator. His example continues to relate to the modern world