Well said
suninmyeyes
All new aircraft have teething problems - something a few of the posters here would do well to remember, and which of course EK will have been well aware when they placed the early orders.
It's a large and complex aircraft, and not all the bugs can be eradicted until has it has entered service.
Iirc, the 747 had a very poor performance in it's early days, (the lack of power from the power from the P&W engines is a matter of record).
I well remember how long it took for the -200 series on the PA99 (LHR-MIA) to reach is final cruising level with a full load of pax, fuel, and the stuff under the floors.
Why Der Speigel has chosen to highlight this can only be guessed at, but before this thread is moved into the 'Airlines and Airports' thread, and amalgamated with the existing postings, you might like to consider that point. A spoiler fed to them by Boeing perhaps? - I couldn't possibly comment
