Board Thread:General Discussion/@comment-28083312-20161223141011/@comment-27345308-20161223205448

According to [ this], you are both powerusers. Special:ListUsers extension was built years ago and it has terrible bugs, so it's probably not a reliable way of checking things like this. It was also created on 23rd December 2008, while PowerUser extension was created on 12th February 2015 so maybe it wasn't properly implemented because ListUsers code is too old.