I take it, Paddington, that you work for BA 'cos it was BA who reported the fact incorrectly! The truth hurts!
LHR is the WORST airport in Europe for delays and the SECOND worst airport WORLDWIDE!
Note how every man-jack of the Long-Haul aircraft moved from LGW to LHR have lost passenger numbers (Houston oil-men now prefer IAH-LGW with Continental, LGW-FRA with BA and FRA-LOS with Lufthansa rather than trek LGW-LHR or IAH-IAD-LHR-LOS!
Obviously BA don't listen to their clientele - LGW is the preferred and more convenient station!