I've stared maybe 2-3 repositories over the past 15 years, contributed to probably a half dozen and used hundreds (if not more) in my applications. To me using means using that project in an application you develop. Typically I get them from NPM or Nuget and I contribute when a) the project owner thinks my feature idea is a good idea or b) I run into a bug that I can fix.

Starring is just not that useful to me so I can see why users or contributors would be much higher. I typically star repos if it's an unpopular or old repository that doesn't have NPM or Nuget packages.