Comparing Windows and macOS power consumption on a Macbook?

Question

macOS

You won't surprise anyone with Windows on Apple. And Apple itself now provides the necessary software for parallel installation of Windows with osx on a poppy. So the question is this. Is there any exact info on the Internet, on forums, or from personal experience, which OS drains the Macbook's battery faster and by how much ?! Because, for example, infa that Chrome drains the battery much faster than the same IE / Safari is.
It's just that either one of them obviously drains the battery faster, or it's almost the same and generally everything is sideways.
What is needed is not assumptions, but exact information, some tests or reviews or personal experience. Tried googling, but to no avail. It's clear that macOS is now super optimized and everything else. But we take as an example Macbook Air 13 (2015) macOS Sierra / Capitan and not quite the latest Windows, for example 7/8.
Although if there is infa about comparison with the 10th, it would also be cool.
In general, I will be grateful for the help!

Answer 1

Yes, there can be no such information.
Battery discharge depends on the load.
In different systems, different applications are used in different ways - and the battery discharge depends solely on the intensity of their use.

Answer 2

I cannot claim objectivity. But I will say this from personal experience.
Mac Air mid 2012, bootcamp win x64, OS X El capitan
On Air, I mainly work with Chrome, the number of tabs is always more than 10, and passing processes like Photoshop, torrent, SIP client, etc. are often launched.
In my opinion, on Windows, Akum sits down faster. Approximately 25% i.e. if I work on OS X I can work (figure from my head) 1 hour 15 minutes, and on Windows I will work only an hour.
There are a lot of environment variables and running applications change very often along the way.