Small sample set aside, the performance differences here are much bigger than I've seen in previous linux comparisons. Something has to be off right? Curious if anyone is able to reproduce these results.
I got curious which installer CachyOS uses, and it looks like they just use their own fork of Calamares. To be fair, there is a Calamares installer for Arch as well, its just not included in the ISO. If it got enough popularity votes from the AUR, they would probably consider including it in the ISO, but there doesn't seem to be any demand for it.