Deity scoring is higher, and on deity AI's grow faster and therefore get more points.
Dutch are destroyed, half the time was killing their units/hoping for cities to flip so I could take them back so they'd give me Breda, and they did. I'm out of my GA, and have got 19 cav, 4 musketeers, 12 galleons, and 3 cav armies ready to do battle with the culturally evil Celts. Those galleons can set up a ship chain for faster unit trasnportation. I plan to totally destroy Celts.