You just really are out of touch with the facts. You might want to check with the information retrieved from the compound....as well as use some common sense. History of war has zero to do with the type of war against terroism currently. Different time...different era...different in every way...including how and when one can be killed. Read some of the military manuels on engaging the enemy and your opinion should change.
So, in your opinion, based on the information you have seen, was OBL presenting a threat to the SEAL Team when he was killed?
Because the information I have seen indicates he was no threat, and that he was killed because that was the mission.