I play like a turtle but must admit that the blitzer would win the war hands down. If there were the ability to play head to head, then a turtle might stand a chance depending on the level of quality of his troops and his own tactical ability. He still loses if all battles are autocalced.

The AI does a terrible job of blitzing as is evident from anyone who allowed the Mongols to expand. By the time they get to Europe's edge, their empire is ripe for plucking. (I must admit never having allowed them that oppurtunity.)

Also the Mongols then have the problem with the Timoruds coming in behind them. It would be immensely more challenging if they were not fighting amongst themselves....say one goes thru Baghdad and the other appears at Bulgar.