Star Quality IS NOT being a star.
Star Quality is the look of being a star and nothing else. When you just look at someone on the screen before they do anything or in the street and think, wow! look at them. Scott Hall oozed it. B+/A territory. HBK above average at best. Hell, even Ryback is streets ahead of HBK in Star Quality. Popularity has nothing to do with it. HBK succeeded despite lacking in Star Quality, and to a greater degree Mick Foley.