Unsatisfying.
John has to do a job for a guy or die, who will then decide he has to die anyway. John knows this will happen so he sets up weapon caches in advance. Why not just kill that guy right from the the start?
John doesn't kill him because he is aware of the intricacies of the politics and rules of this world and won't violate them? But then he goes ahead and kills that guy anyway, violating all the rules.
You can't have your cake and eat it too, movie. You started a beautiful franchise, and ruined it almost immediately.
