Airbus Payback time?
Boeing and Airbus seem to have both suffered from a little overoptimism. Airbus must be feeling they are due for some payback after their delays on the A380. They also had a similar backlog of orders before the problems arose.
Building of components and sticking them together is an Airbus "trick", largely as a result of the dividing of the employment pie between the various governments involved. Airbus wings are built by BAE at present.