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Windows 11 scores dead last in gaming performance tests against 3 Linux gaming distros
(www.notebookcheck.net)
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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They probably didn't label their axes properly. FPS is a clearly defined metric, and there, more is better. This indicates that the conclusion (Linux is faster) holds. Since frame times have an entry with value “100” and all other values are lower, I assume that's in percent, i.e. Arch Linux is the fastest and picked as comparison point, and the others are shown with relative performance to Arch.
It says "Prozent" in the bottom left of the screenshot. You are correct. They use percent to compare them. So more is actually better here.