Actually if your playing a peace game and are good on the defensive you can whip the aggressive AI easier than the normal AI, it techs slower, supports tons of troops it doesn't "need" and generally is over specialized for dealing with a rush.
Of course I have the opposite problem with the normal AI, it still techs slower than me (but I'm playing below my level to play with AI changes) but keeps up relatively well so long as it's able to trade freely. If there is any real flaw in it the flaw is that neither AI is really equipt to handle limited or no tech trading so I have to play with them on for a "fair" fight.
Ideally I'd like to see both options used in a single game. So some AI's are rabid unit builders, and some tech faster.
The way it is now is almost cheap. If I'm not going for war it's easier to win on aggressive AI, keep stacks in my cities, build forts, and keep fast moving units and defenders in the forts. The minute someone invades my territory attack their stack with fast unit stacks from forts and cities, make peace soon. Similiarly a rush on normal AI is an easy way to get ahead quick.
These new AI's aren't Versatile. They don't stand alone well. Together however they would be a challenge. But I can't call either one "the New Real AI". I'd have to call it more the newest exploit. It's fun to win, and to play differently than I normally do to handle the different AI's, but . . . it's still kind of cheap and eventually I'll have to force myself to NOT play well against either AI, unless we get a patch with some new options.\
Am I the only one who's seen this as a flaw in the new game design?