Boeing is so booked out on its 787s they probably couldn’t offer deliveries to match Airbus’ promises. But you notice that they seem to be hedging their bets. When the A350 falters Airbus style, I’d expect the 787 orders to be upped.
I believe you are referring to an Emirates Airlines deal worth about 35 billion USD for both Boeing & Airbus aircraft.DAE is a separate company-I don’t think it has any official relationship to Emirates.