Not sure about the CPU performance being much more powerful for some shit-stained NUCs found on ebay, but one selling point for these minisforum machines are hassle-free dual 10G interfaces which are required for decent cluster performance - see ceph or proxmox ( with ceph ) or even kubernetes with, you guessed it - rook-ceph. Getting 10Gbit interface to work on ThinkCentre is possible, but not guaranteed to be reliable. This machine is perfect for such application and price point is not that terrible all things considered.