Grammarly seems a little too kind to me

If you use Grammarly, you receive a weekly analysis of your writing statistics listing your productivity, mastery, and vocabulary.

Below is a portion of my results.

I don’t post mine here as a means of bragging but instead as a serious question:

Is Grammarly simply offering me exceedingly positive statistics each week to make me feel good? Stroking my ego?

Is it really possible that I am using more unique words than 99% of all Grammarly users? Could I really be 99% more productive than all Grammarly users every single week? Is my accuracy really 96% better than all Grammarly users?

I don’t think so.

I suspect everyone is getting inflated scores to keep them happy.

If you use Grammarly, please let me know.