While that particular album probably belongs on a top 100 list (hell just for Billie Jean alone), you make no argument beyond that it sold the most, but this is "best albums" not "most popular albums"... I don't know what the top grossing movie is, probably Superhero 6, but no one would be surprised if it didn't make a movie critics "top x movies" list despite doing so well at the box office.
While this list has many problems, it's certainly better than
this list because most people are dumb and have bad taste...