What's really puzzling to me is that the Estate (or Spotify themselves, maybe?) have changed how MJ's music is streamed (here at least).
Since at least 2009, it's been Number Ones that has been the album of MJ's that has hovered around the top 100 albums here in Ireland. All of the top songs were streamed as part of that album. All of a sudden last year, Number Ones dropped off the face of the earth and The Essential has now replaced Number Ones on the chart. So something changed whereby the streams are counted towards The Essential and no longer Number Ones.