The following table depicts data about all the Italian municipalities.
As shown Rome has a bigger population than Milan and also a bigger geographic extension. Instead the population density of Milan is two times that of Rome.
Accordig to data available on ratingcomini.it we can compare the financial and wellness ranking of Rome and Milan. Before read the data we can think that Milan has higher financial ranking than Rome, but it is not truthfully. In the following chart are shown the financial rank of Rome and Milan. As shown at the early twenty-first century Rome has higher financial value, but nowdays Milan has a slightly higher value.
The last two charts show that Rome has a stable rank of wellness over the years. Instead Milan shows more variation in wellness rank over the last decade.