Not all law enforcement officers are crack shots either. In each circumstance, it really depends on how much time the individual wants to spend on their own doing additional training, and how well they can perform under pressure.
On the subject at hand, I think an individual has less pressure, and more time to consider their responsive action during a life-threatening situation if their weapon is concealed. Open carry should be for uniformed officers only.
So, are you saying that individuals should not be allowed to open carry because it would put them in MORE danger? Even IF that were true, shouldn't that be an individual's decision to make? Not just another case of uncle sugar deciding what is best for the masses...