A Tale of Three Blacksmiths

This is an explanation that shows what I believe to be the differences between benign and invidious envy, as well as fitting or unwarranted envy.
There are three blacksmiths in the same village. They all vary in skill level; one is fairly good with the basics, the second is becoming very good at specific kinds of tasks, specifically weapons and armor, and the third is a master of all trades. Their king comes to town, looking to promote one of them to head blacksmith back at the keep. He decides to promote the second one, the one who is good with weapons and armor. When the other two hear of this, they both becomes envious of the prestigious position, but for different reasons. The beginner blacksmith decides that, in order to impress other potential employers, he will continue to improve his trade and become the best in the land. This is benign envy. The master blacksmith, however, is angry, and thinks that he should have gotten the position. This is invidious envy. He goes on to become upset with his mediocre counterpart, thinking he should have gotten the position and that the man who did is unworthy. This is resentment. As well as these forms of envy, it could be said that the beginner blacksmith's envy was fitting, for he was upset but did not deserve the position, while the master's envy was warranted, as he was the most qualified candidate and therefore has justification for the way he feels.

Why might the assumptions I have made about what these characters feel and why they should feel what they do be wrong?