I would, however, argue that intelligence is not an aggregated function. We are not hive minds. Therefore the means and/or medians don't matter. It is the exceptional and individual intelligence that matters to making a city more functional, more livable.
The dumber among us do not engineer, maintain, and improve the efficient power grids, the sewer and water systems, the telecom and internet networks, the traffic conduits. The more intelligent do.
It’s concentrated intelligence in small markets that makes their stupid list. Simple as that.
Umm, with those criteria, Atlanta may not help bolster your argument ;-)