All, I have created a graphic to illustrate how all of the various confidence scales relate to each other in STIX 2.1 (or I should say what is being proposed for STIX 2.1). The tables of information that fed in to this graphic can be found in the appendix of the STIX 2.1 Part 1 document. I for one find graphics to be easier to consume, and I hope you do as well. Let me know if there are any issues with the graphic. You can find my confidence mapping graphic at the bottom of the page here:
https://freetaxii.github.io/ Bret