The pgbench score is conspicuously missing too, which is heavily disk dependent, which is universally heavily over-subscribed by VPS providers.

There's a smokescreen at the end "our storage is hardware RAID6 with 15k rpm SAS disks" which means very little. (i.e. if that's internal storage across 8 spindles, it's barely going to sustain 1000 IOPS in anger. That could be monopolized by a just a handful of VMs)

This link should be buried.