Thanks for commenting. I was hoping you'd weigh in!
My understanding is that ANY transmission line is susceptible to the chaotic data they were showing in their graphs.
And, by extension, installing a device to "tune" the stream to be less chaotic, showed the increase in efficiency and drop in overall power draw.
The extrapolation I took away from his data center power-tuning example, was that this same method could work anywhere in the system - generation, transmission, distribution - to increase efficiencies at all points, thereby decreasing the overall load on the system.