You can run Linux on a MacBook Pro and get similar power efficiency.
Or run third party apps on macOS and similarly get good efficiency.
What? No. Asahi is spectacular for what it accomplished, but battery life is still far worse than macOS.
I am not saying that it is only software. It's everything from hardware to a gazillion optimizations in macOS.
The things where it lags are anything that use hardware acceleration or proper lowering to the lower power states.
You can run Linux on a MacBook Pro and get similar power efficiency.
Or run third party apps on macOS and similarly get good efficiency.