You don’t even need 5000 years. Colonial forces regularly beat 10:1 odds against natives, and they very obviously lived at the same time. The battle of Ulundi saw the british win with 20 deaths, against a force of 15.000 Zulu warriors. Even the famous British defeat at Islandlwana saw the Zulu impi suffer tripple the British casualties.
Well, how much had technology advanced in the 5000 years before the Roman Empire?
A lot actually if you really compare the technologies, also the romans could haveeasily beat any army 5 times their size from 5000 years before.
You don’t even need 5000 years. Colonial forces regularly beat 10:1 odds against natives, and they very obviously lived at the same time. The battle of Ulundi saw the british win with 20 deaths, against a force of 15.000 Zulu warriors. Even the famous British defeat at Islandlwana saw the Zulu impi suffer tripple the British casualties.