Apples** and Oranges all over again
Brilliant bit of marketing, with the network test showing "significantly improved throughput". Of course, the comparison didn't address other, similar configurations (such as Cisco's VSS or Stackwise), instead focusing on the path-limiting features also known as STP and VRRP. It's really disingenuous to make such a comparison, given that STP intends to eliminate loops (i.e. single, shortest network path) and VRRP has no relavance in a VMotion scenario (operates at L2, not L3). I'm sure this demonstrates the hard work at HP to innovate, which is certainly the nicest thing I can say about it without using bollocks, dingus, asshole, fucktard, and many other assorted dirty words.
**Thankfully, "Apples" has not been copyrighted, trademark or (spiritual figment of your imagination forbid) patented by a certain fruity company in that oh-so fruity place called California.