(answer to the question "Boeing & Airbus what are the similarity & differences ? Where are they heading actually ?")
Airbus' hubris mirrors that of Boeing in the 90s. Both are heading for big disapointments if they keep believing they live in a duopoly.
It won't take long for China to come rockin' and rollin'. And the beauty of it is that China offers yet another kind of public subsidies : neither the US DoD model, nor guarantee from national governments, but the massive demand of private companies controlled by the board of China Inc.