This study is attempting a purposeful deception. There is another reason for setting up districts this way, which is to curtail the influence of highly concentrated urban populations picking representatives for people whose lives and issues they know nothing about. If you look at the NY statewide election, the only reason Cuomo won re-election was that 3 urban centers overwhelmingly voted for him. Every other county, in a massively large state, voted for the other guy.
Now you could argue that those urbanites are just so much more intelligent than the country folk. Talk to people in NYC and ask them why they voted for Cuomo, despite his self-inflicted corruption scandal. Even his competitor in the primary could have trounced him absent the urban vote.
If it were not for gerrymandered districts, these same lackluster voters would be picking representatives who had no interest in representing those who live anywhere else farther than 20 miles from NYC, Buffalo, or Rochester (and those just barely).