Great question — answering as the UphillTech team:
There is a formula for this club ranking. A club is given a point each time they win a regular season game in their domestic league or continental club competition such as UEFA Champions League or Copa Libertadores. A team receives 4 points for a win and 2 points for a draw in the top domestic league, and fewer points for the second, third, and fourth-tier league. A win in the UEFA Champions League and Copa Libertadores won 14 points and a win in the AFC or CAF Champions League won 12 points. A draw is always half the points of win. A second-tier continental competition gives less points that the top-tier competition. The full table can be found in the archived version of the original...
Full answer by user67275: https://sports.stackexchange.com/a/28687 (CC BY-SA 4.0).
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