Which is not comparable information, he's going by AFTERBURNER reported wattage, not "at the wall" figures.
Afterburner, LIKE ALL SOFTWARE, only reports the power draw of the GPU itself (NOT the entire card) because that's what the AMD Polaris cards report for power draw.

Nvidia is a lot more honest about that, their cards (and utilities like nvidia-smi) report the ENTIRE CARD power draw.