I bet they don't publish Linux numbers because it depends on which desktop you use etc.
So to get the best battery life you need, for example, your browser to use GPU-accelerated video encoding and decoding.
Linux is something of a second-class citizen for both GPU vendors and browser vendors. So for example if you're using Firefox and an nvidia GPU on Linux? No video encode/decode acceleration for you. The browser will silently switch to CPU decoding.
This translates into worse battery life.
They ship with Ubuntu on it, which would be quite natural choice for such benchmark. Also they do do the standby test on Ubuntu for some reason.
Can't help but suspect there's a reason why Linux numbers are not given. :(
By the time these laptops start shipping, 26.04 should be released and testing should be easy. I suspect no major differences from it vs windows.
7.1 includes even more performance improvements for panther lake. [1]
[1] https://www.phoronix.com/news/Linux-7.1-Enabled-Intel-FRED
I definitely /wouldn't/ rely on just Windows figures for a machine that's otherwise advertised as "Linux first". If the battery life was the same on both, I'd prominently mention that.