If anyone wishes to see some high level Caesar III play on Julius (notably not Augustus) I can recommend watching DDRJake, he plays custom maps that are still being made to this day!
I find it incredible how he's able to take some incredibly difficult maps and beat them without any prior knowledge; the skill in planning a city before planting even the first building takes an imagination far beyond mine, and adapting live to sieges and other dangers is even more impressive.
https://www.youtube.com/playlist?list=PLm0MDLKuRDrlbT3Boixpg...
I find it incredible how he's able to take some incredibly difficult maps and beat them without any prior knowledge; the skill in planning a city before planting even the first building takes an imagination far beyond mine, and adapting live to sieges and other dangers is even more impressive.