Originally Posted by
frankvb
The only thing that it means is that there is a bigger non-free-standing building... It is just a trick to create a top-of-the-list experience. Sorry but can't help with what the difference is.
I would guess that it's got something to do with the roof and its means of support, i.e. the Millenium Dome is bigger but held up with wires...
It's like LHR itself has a top of list experience if you measure it by number of
international passengers per annum.