I could be wrong, but I believe that's when they were comparing it to 14nmLPE (referencing the comparisons of the iPhone having better battery life with 16nm than 14nm).
According to Samsung, 14nmLPP consumes 15% less power and produces 15% more performance. Making ~35% increase in performance per watt over LPE.
Possibly true. Then of course there is the marketing buzz though, because both technologies are based around a very similar 20nm node of the same dimension, 14/16n is just a marketing name so I would be curious why and what the actual difference is between the 2.