I have an account on lemmy.world, but when I ping it, I'm in the 100ms. I ended up on lemmy.ca where the ping is 3ms average, it makes a big difference in responsiveness.
That's a terrible justification. lemmy.world is using Hetzner, and not a CDN whereas lemmy.ca is using Cloudflare, which is a CDN. Pinging is a terrible benchmark for comparing server performance.