Read the test here's where it's rigged...
1. They tested a Hyperflex system with 10K capacity drives, against a system running 7200RPM SATA drives? I wonder why write latency was awful under steady state load on that platform.
2. Vdbench to simulate SQL? Are they drunk? Can't afford benchmark factory, or SLOB?
3. Why was a completely different model/ generation of SSD chosen for Vendor C? Based on Cisco Supply chain it looks like someone shifted from SAS to SATA here and to a several year old model.
Missing also from this are the version numbers, firmware, drive make models, CPU's used, What the size/spec of the VM's were.
If you want to see what a real methodical bench marking of HCI looks like Check out the Principal technology reports.
Here's one for Nutanix.
Here are Exactly the same tests performed on vSAN