Regardless of who he was, he's now dead.
A man who is hopped up on adrenaline because he's planning to escape or die trying can catch a person who's doing "business as usual" off guard...Even a trained police officer.
Have you ever gotten a speeding ticket? Guessing the cop caught you off guard. Ever get in a traffic accident? Somebody got under your radar.
We know nothing about the physical builds of the two men in question or what distractions may have been happening at the moment. Please don't be so quick to rush to judgment when the facts are not known. If he made a mistake, he paid for it with his life. If he was a victim of circumstance, the end result is no less sad and infuriating.
Well, if deputies asigned to courts are ill-prepared for this kind of scenario, maybe they shouldn't be carrying weapons into court.