Theoretically one could argue that deep knowledge of the game can allow a player a high degree of being able to predict battle outcomes. One could also say that its possible to use the game itself as a way to simulate battles, just play both human nations and develop them so that it would be possible to simulate battles.
Besides, randomness has very big effect in battles esp. if they're evenly matched.
All that said, I guess you have a good point as I can imagine this tool being abused
