Interesting video, showing again that thermal constraints as well as theoretical cpu power define actual performance. But for the MacBook the outcome at 4:40 is also strongly influenced by Adobe premiere not optimised for opengl or macos.Do you know about this: "Kaby Lake Macbook Pro VS 4 Windows Laptops, Way Slower", see here
The shocking result of a rendering test can be seen at about 4:40 into the video
I found this very strange, but there are many similar tests to be found on you tube.