Thats primarily because human players are much better at trading. You can often use one advanced tech to catch up a whole era at times if you need to. In Toku's case since he just plain doesn't trade with people in basically removes one of his disadvantages compared to the other AI.Nares said:There may be something to that. Sirian has stated elsewhere that the AI will perform better with tech trading turned off than with it turned on, though I do think the overriding factor here is that Tokugawa attempts to run a specialist based economy with very few Cottages and without early Representation.