“Your reviewer toughness score is 20%. This means that 20% of the time you gave lower scores than the other reviewers of the submissions you reviewed. Reviewers are encouraged to maintain a toughness score closer to 50% so that they are working on roughly the same scale. You may want to update your reviews with this in mind.”
I wonder what is going to happen if all reviewers actually try to reach the 50% toughness level. Meanwhile, I will maintain my independent opinions.