I "benchmarked" the network across a few big VPS providers, they all seem to do 400Mpbs+ within the continent and 100-200Mpbs when you go across the ocean (iperf3, I assume you also meant heavy sustained traffic). It also aligns with what the creator of PHP found out: https://toys.lerdorf.com/low-cost-vps-testing. Did you find a provider where the network would allow you to go 300Mbps+ across the ocean on a cheap VPS?
Re: CPU, if you were comparing them with the VMs from "the big 3", you should look under the "Dedicated vCPU" tab: https://www.hetzner.com/de/cloud
Re: CPU, if you were comparing them with the VMs from "the big 3", you should look under the "Dedicated vCPU" tab: https://www.hetzner.com/de/cloud