We're not talking about a static shooting range situation here, my FRiend. We're talking about a very fluid, stressful, combat situation. The perp could well be moving, and moving in an unpredictable way.
Perhaps you, or an extremely well-trained police officer, could hit a moving target in such a situation. But perhaps not. The discussion on this thread was whether or not the shot was worth the risk to the hostage.
By the way, why did you start your post with an insult? That sort of thing rarely contributes to a discussion.
A cops first duty should be to the people he is supposedly trying to protect. If someone points a gun at him while holding a hostage and the cop can't make the shot, he shouldn't shoot. This cop is guilty of manslaughter at the very least, and IMO should be tried for 2nd degree murder.