IMO, this article confuses building speed with production rate. A city that takes a month to build a skyscraper will be ranked lower than one that takes three

IMO, this article confuses building speed with production rate. A city that takes a month to build a skyscraper will be ranked lower than one that takes three months to build one if the former has one build going up at any time, completing 12 in a year, and the latter always builds 4 in parallel, completing 16 in a year. A hypothetical city that builds a complete skyscraper in a day and doesn’t build any the remainder of the year would score way lower than either. If we assume a global market for building crews (which, I think but correct me if I’m wrong, is somewhat true. Specialists are willing to move around to get to work on big projects) and little shortage in tooling or materials, those numbers reflect demand, not at which rate they can build.