Basically the challenge in Sim City is to grow your population, attain a high approval rating, keep crime and pollution low, and keep your citizens happy in general. One does this by zoning properly and creating the right government services. If you fail to do this well, buildings will become abandoned, citizens will revolt, and your tax base will erode, which will send your city into a downward spiral of deterioration, not unlike what is seen in modern rust belt cities.

He has essentially obtained perfection by building a totally perfect (in the eyes of the game), uniform city.