Kai, Your map must be configured differently. Most of the AI in my game seemed to be stuck around 8-12 cities with very few options, if any, to expand. The AI should not be able to make units faster than you can chop/whip them. They get distracted by buildings, wonders. The only hard part about getting 1.5x power is being able to afford the cost of that many units. G.Warriors are the best 'bang for your buck'. In other words, you get the most Power for the least amt of hammers. A HorseArcher is equal to a GW, but costs more. I could have gotten 6 peace vassals in my game, but I only took 5.