How can two members with different numbers of posts both have a #1 Post Rank?

The title says it all. Several members are ranked “1” under “Post Rank”. What does “Post Rank” really mean?

After looking at it some more, every member has a power-of-two post rank. I don’t think this is intended!

Looking at a list of members, sorted by post count, numbers #23 through #37 all are ranked fourth.

Where are you doing this?

maybe it has to do with time preference?

It’s gone out of the new profile.