Even the Met Office's press release just says it weights as much as 11 double decker buses rather than any actual technical details. I presume they didnt buy it by weight, why dumb everything down.
- quantitative information about the new system's power relative to its predecessor ("13 times more powerful"; I assume they mean something like "13x faster on typical workloads")
- quantitative information about its speed in absolute terms ("more than 16,000 trillion calculations per second")
- quantitative information about what it will let them do that they couldn't before ("forecast updates every hour", "very high resolution (300m) models", and few particular projects they intend to use it for)
- a little more tech-spec information, albeit stupidly presented ("120,000 times more memory than a top-end smartphone", which I presume means either 120TB or 240TB)
- how much they're spending
- how long they expect it to take to get it set up and working
and they do give the weight in tonnes as well as in double-decker buses. I don't really see that there's much of a problem here.
[1] http://investors.cray.com/phoenix.zhtml?c=98390&p=irol-newsA...