I’ll admit it’s probably my bias, but it seems that the enemies *always* seem to hit that “impossible” shot at your most important guy! I’m sure that part of it is that the AI looks to see the best hit % vs. benefit. HOWEVER, it very much seems that the AI is blessed w/ “magic arrows”. ;-)
In a single player game, there's no such thing as cheating. It's merely "creative manipulation of the default settings"!