I think you're missing the point that in terms of tradeoffs people are willing to make: absolute compression ratio loses to 80% of the compression ability with big gains to decompression speed (aka include round trip cpu time if you want something to agree / disagree with, we're not talking about straight compression ratios).

Arch Linux is a case study in a large distributor of open source software that switched from xz compressed binaries to zstd and they didn't do it for teh lulz[0].

[0] https://archlinux.org/news/now-using-zstandard-instead-of-xz...