How do you know that what you are saying is true? And if it is, how in the heck can Firaxis be notified, so they can fix it? From what I read here
http://aigamedev.com/open/articles/good-vs-fun/ we need a mix or balance of both. According to Soren Civ 4 is in the middle between Good and Fun AI, why can't CiV be as well?
Some other things I heard about the current AI in other threads, over the months.
1. It is basically AI from Civ IV, much of the new game was not redesigned, it is a continuation of those ideas from the previous game. So programming CiV was not particularly innovative.
2. Firaxis had a lot of updated ideas, but they use old programming to meet those ends, that were already in place from Civ IV. Programming and design deadlines also killed the game, because much of what was to be added, never was, due to time constraints.
3. The current AI does not understand 1UPT (among other things). And as far as diplomacy, Civ IV was based on diplomatic and other modifiers, CiV is not. Besides that, there really is not all that much there for the AI to diplomatize, because what was supposed to be added to CiV, was left out of the game.
4. In short we have an incomplete game here. Perhaps, they should have waited awhile before rushing it out there, until it could truly be the next step in civ gaming. However, since they did not wait, at least they could finish what they started, and get the game where is it supposed to be, with a better AI, better diplomacy, better naval combat, and I could run on and on and on and on with this sentence.