Re: Diagram wrong
It looks to me like the diagram on the left is using a type 2 hypervisor (i.e. essentially an application running under the host OS). Since a type 2 hypervisor is not as efficient as a type 1 (i.e. VMware), that's what I'd do if I wanted to make the benchmark difference between VMs and containers as large as possible.
It's not relevant to most real world situations, but hey, this is marketing we're talking about.