I would guess the FreeBSD is the remote server as it’s usually used as a server os and the archlinux installation has a zen processor that I don’t think would be that useful inside a server
if by “zen processor” you mean zen kernel then yes you’re correct: iirc (linux) zen kernel is tuned for desktop usage, and also both machines are on ryzen cpu so I don’t think that matters here.
the desktop in this image is arch linux, and the remote freebsd machine is actually sitting right behind me, it’s also what powers my instance that I’m posting from.