Microsoft noted improved video quality and battery preservation using Microsoft Edge verses other browser alternatives

https://blogs.windows.com/windowsexperience/2016/07/13/get-better-quality-video-with-microsoft-edge/

When it comes to video, the closer to the hardware, the better.  From video hardware acceleration to PlayReady Content Protection and the Protected Media Path, Windows 10 is designed to provide the highest quality, most secure, and most power-efficient video playback available on any version of Windows.  Microsoft Edge has been engineered to optimize for and take advantage of these Windows 10 built-in media capabilities, providing the best video experience of any browser on Windows 10 based on our data and testing. So go ahead, binge watch your favorite shows on Microsoft Edge!

Most Power Efficient Video Playback — Our results have shown that Microsoft Edge outlasts the rest, delivering 17%-70% more battery life than the competition.

Higher Quality Video — In our video tests, not only was Microsoft Edge the most power efficient, but the premium video site we used also sent higher resolution and bitrate video to Microsoft Edge compared to the other browsers.  Here are the details: