I wish they didn't do these tests on a Microsoft-made Surface Book...They should've taken a couple of other popular Windows 10 notebooks and maybe do the tests on those. Who knows how much of this difference is because of Edge itself (which is how well it would work on other notebooks, too), and how much it's the optimization they did for Edge for their own hardware.
They say they test across hardware in the article - the Surface Book is the only one they pictured because it's an MS blog and an opportunity to advertise MS hardware.
Besides, I'm pretty sure lowering the number of frames in an animation (among the other fixes/features they mention) is going to pretty much universally lower power requirements.
We chose the Surface Book because it's instrumented with a chip that allows direct measurement of instantaneous power consumption, which most OEM devices don't have, and because it has lots of battery for a fun run-down video :)
