An interesting interview of Mobile Game Faqs. On asking about Ancient Empires AI the developers answered: 'I have had some comments from people here that the AI plays just like I do, which is a nice compliment! When balancing the AI you will normally end up having it make decisions similar to those you would will make as a player. However, it's important to make sure that AI decisions don't always follow the same path. Trying to make the AI as context sensitive as [...] making sure that units will actually try to accomplish the goals set for them in a level.'

More info here: http://www.mobilegamefaqs.com/newsstory. php?id=182