Well I finally got around to playing Greece and I have to say that the horsemen strategy is every bit as good as is represented. IStandard Map and King difficulty. I didn't even rush horseback riding but instead took my time and built a few Wonders early on in Athens and started a second city. I then built my CC Four Horsemen of the Apocalypse and essentially burned the rest of the world to the ground. It was all over before we ever got close to the Renaissance. I think I could have won faster had I not wasted a time at the start. I think I'll have to agree with others that this is a bit overpowered.