That's probably due to your ISP imo, they're known to favor some routes/servers
Or the cabling to the cloudfare server is worse than to other servers
Or the cabling to the cloudfare server is worse than to other servers
I'm looking at the network tab, it seems like they send a ton of small requests instead of a large one... which might point in the direction of the problem.
[1] https://syd.mirror.rackspace.com/archlinux/iso/2022.04.05/ar...
Example: Rackspace Sydney (AS58683) has (likely paid) peering with AS7474, who has peering with German Deutsche Telekom (AS3320). Peering with DT is significantly more expensive than many others because they have a regional monopoly.
* Cloudflare is present at many regional Internet Exchanges and any good ISP connects to these, too. Some don't, however, like Deutsche Telekom.