All this is manipulative, his history isn't "Detailed" as sometimes described at all, it's not even a historical
He uses this chronology to prove that Moses and the other Hebrew prophets preceded the philosophers. The leading chronological epochs correspond to the Old Testament prophets. It's OT figures he's primarily concerned with. Only reason it can be said to go to Marcus Aurelius is because of the dating information he uses in chapters 27&28
(He disagrees with most sources on the Reign of Galba interestingly.)CHAP. XXVII.--ROMAN CHRONOLOGY TO THE DEATH OF M. AURELIUS.
When Cyrus, then, had reigned twenty-nine years, and had been slain by Tomyris in the country of the Massagetae, this being in the 62d Olympiad, then the Romans began to increase in power, God strengthening them, Rome having been rounded by Romulus, the reputed child of Mars and Ilia, in the 7th Olympiad, on the 21st day of April, the year being then reckoned as consisting of ten months. Cyrus, then, having died, as we have already said, in the 62d Olympiad, this date falls 220 A.V.C., in which year also Tarquinius, surnamed Superbus, reigned over the Romans, who was the first who banished Romans and corrupted the youth, and made eunuchs of the citizens, and, moreover, first defiled virgins, and then gave them in
marriage. On this accounthe was fitly called Superbus in the Roman language, and that is translated "the Proud." For he first decreed that those who saluted him should have their salute acknowledged by some one else. He reigned twenty-five years. After him yearly consuls were introduced, tribunes also and ediles for 453 years, whose names we consider it long and superfluous to recount. For if any one is anxious to learn them, he will ascertain them from the tables which Chryserus the nomenclator compiled: he was a freedman of Aurelius Verus, who composed a very lucid recordof all things, both names and dates, from the rounding of Rome to the death of his own patron, the Emperor Verus. The annual magistrates ruled the Romans, as we say, for 453 years. Afterwards those who are called emperors began in this order: first, Caius Julius, who reigned 3 years 4 months 6 days; then Augustus, 56 years 4 months 1 day; Tiberius, 22 years; then another Caius, 3 years 8 months 7 days; Claudius, 23 years 8 months 24 days; Nero, 13 years 6 months 58 days; Galba, 2 years 7 months 6 days; Otho, 3 months 5 days; Vitellius, 6 months 52 days; Vespasian, 9 years 11 months 55 days; Titus, 2 years 22 days; Domitian, 15 years 5 months 6 days; Nerva, 1 year 4 months 10 days; Trajan, 19 years 6 months 16 days; Adrian, 20 years 10 months 28 days; Antoninus, 22 years 7 months 6 days; Verus, 19 years 10 days. The time therefore of the Caesars to the death of the Emperor Verus is 237 years 5 days. From the death of Cyrus, therefore, and the reign of Tarquinius Superbus, to the death of the Emperor Verus, the whole time amounts to 744 years.
CHAP. XXVIII.--LEADING CHRONOLOGICAL EPOCHS.
And from the foundation of the world the whole time is thus traced, so far as its main epochs are concerned. From the creation of the world to the deluge were 2242 years. And from the deluge to the time when Abraham our forefather begat a son, 1036 years. And from Isaac, Abraham's son, to the time when the people dwelt with Moses in the desert, 660 years. And from the death of Moses and the rule of Joshua the son of Nun, to the death of the patriarch David, 498 years. And from the death of David and the reign of Solomon to the sojourning of the people in the land of Babylon, 518 years 6 months 10 days. And from the government of Cyrus to the death of the Emperor Aurelius Verus, 744 years. All the years from the creation of the world amount to a total of 5698 years, and the odd months and days.
So they describe it as though it's a comprehensive History like Jospehus, but it's really only a brief discussion designed to tie OT history to then contemporary historical dates.
Yet the simple fact that he didn't stop and give any little footnotes for the reigns of Augustus and Tiberius saying "This is when Jesus lived", is taken as proof he was unfamiliar with a Historical Jesus. Kind of ridiculous don't ya think?
Now elsewhere in this same work, in Volume II Chapter 22 he says.
CHAP. XXII.--WHY GOD IS SAID TO HAVE WALKED.He quotes John's Gospel, so he clearly wasn't ignorant of the historical person of Jesus.
You will say, then, to me: "You said that God ought not to be contained in a place, and how do you now say that He walked in Paradise?" Hear what I say. The God and Father, indeed, of all cannot be contained, and is not found in a place, for there is no place of His rest; but His Word, through whom He made all things, being His power and His wisdom, assuming the person of the Father and Lord of all, went to the garden in the person of God, and conversed with Adam. For the divine writing itself teaches us that Adam said that he had heard the voice. But what else is this voice but the Word of God, who is also His Son? Not as the poets and writers of myths talk of the sons of gods begotten from intercourse [with women], but as truth expounds, the Word, that always exists, residing within the heart of God. For before anything came into being He had Him as a counsellor, being His own mind and thought. But when God wished to make all that He determined on, He begot this Word, uttered, the first-born of all creation, not Himself being emptied of the Word [Reason], but having begotten Reason, and always conversing with His Reason. And hence the holy writings teach us, and all the spirit-bearing [inspired] men, one of whom, John, says, "In the beginning was the Word, and the Word was with God," showing that at first God was alone, and the Word in Him. Then he says, "The Word was God; all things came into existence through Him; and apart from Him not one thing came into existence." The Word, then, being God, and being naturally produced from God, whenever the Father of the universe wills, He sends Him to any place; and He, coming, is both heard and seen, being sent by Him, and is found in a place.