The Competition Rankings are based on all the games played ever in any European club Competition. These games include games played in preliminary rounds. This is a choice I made and may be doubtful. But especially in the earlier days of European Cup Football, it was rare to play preliminary rounds, or at least not as common as it is nowadays. Also included are the results of the games played in the Super Cup, which also may be doubtful.
These Rankings are the result like an normal ranking in a championship. A list of a number of wins, draws and losses. The Competition Club Rankings are made by Club and Competition, which also have been accumulated to a Total Club Ranking. The Competition Country Rankings are made by Country and Competition, which also have been accumulated to a Total Country Ranking.