No need for me to word it better. “What is the difference between arrogance and confidence?” as expressed in your latest post does the trick, and does it admirably. Had that been the initial question, this thread would now be packed with a lengthy list of responses typical to your other questions.
Your suggestion that I concoct an answer is a challenge that I’m reluctant to accept. One of those words is a virtue, the other, a vice. Both are matters of judgement and therefore malleable in the extreme. Is Trump confident, arrogant or both? In October would it have been arrogant to predict Clinton the winner in November? Was Clinton confident or arrogant? Is there a difference between overconfidence and arrogance?
This is another of your questions that I would prefer to neglect, because the rabbit warren of discussion around 2 such flexibly interpreted words is hopelessly frustrating.