I have no idea if George coded the scores to favour the AIs but I find it highly unlikely. As mentioned the scores require rebalancing entierly. I will mention this to George incase it is of some use to him.
Maybe George didn't intend to do this but it sure is happening, and to the AI's detriment. I can see him trying to help the AI's by balancing the scoring towards them and I don't have any problems with helping the AI's seem competitive. Unfortunately in trying to help them, if he did, he's actually dogged them in the economic arena. The number 1 economic power is always the biggest importer and that biggest importer gets to buy it's stuff at the highest price which guarantees they'll remain the number 1 economic scorer and never be able to get out from under the high prices it must suffer.