Is all of your watch time public? Private, unlisted and deleted videos do not count towards watch time. The analytics combines both so very deceptive. If you have private make all public and see what happens cheers 
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
Is all of your watch time public? Private, unlisted and deleted videos do not count towards watch time. The analytics combines both so very deceptive. If you have private make all public and see what happens cheers 