That's not a very good example since both of those are desktop applications providing virtualization and are expected to play nice with other desktop apps. You

That's not a very good example since both of those are desktop applications providing virtualization and are expected to play nice with other desktop apps. You can virtualize in a web browser too, but that doesn't make it a good high performance idea. You should be looking at dedicated virtualization hosts to do an apples to apples comparison, like vmware on bare server metal vs hyperv or any of the free tools also on metal. Not on a cpu throttled desktop.