What are the differences between the Standard, Moderate and Hard difficulty levels in the Campaign mode?
What about between Easiest, Standard, Moderate, Hard, and Hardest in the Standard/Multiplayer Game (Skirmish) mode?
If the AI changes its behavior or strategy depending on the difficulty level, please include that info.
Also, does the AI "cheat" (by giving itself additional resources, etc.)? If yes, what cheats does it do and at what difficulty level(s) does it cheat?
EDIT: In this answer to my question below, most of the questions have already been answered. That leaves the question, "What are the differences between the Standard, Moderate and Hard difficulty levels in the Campaign mode?" to be answered or expounded upon.