I Disagree. Turrets should be better shots than players, BECAUSE of many of these reason: lag, entity confusion/spam, faster lock on, better aim. Turrets have inherent down-balance in the game due to less shield sharing, more energy use by rail mass enhancers, and the faction block bug (unless you have a faction block on base and barrel both). Turrets or docked AI guns are the best way to allow players with slower comps and connections to compete effectively in combat with other AI or players, especially in crowded sectors or around large stations or planets. Until the game is heavily, heavily, massively optimized... (never? :p ) turrets must retain these bonuses.
besides... you can set the AI accuracy in configs ;p