Weapons selection and the AI_DesignCreation file

[God Emperor]

Just wondering whether anyone out there can tell me how to ensure that the AI uses the "best" weapon available.
My observations so far are that the AI equips it ships with the first majority weapon in the AI_DesignCreation file, regardless of whether it does less damage or have less range than a subsequent weapon.

Is this correct? How can we (modders) ensure that the AI selects the best ranged/most damaging weapon?