ElectroVlasic said
B did its work on 7e7 first, so A has the luxury of responding to B's product (at the cost of being later to market)
B wants a product line with range/capacity points that do not overlap
B defintely would not want to create a product that overlaps with 777
A clearly would want to attack the gaps in B's product line
Thus A's annoucement has products that overlap the top of the 7e7 line and the bottom of the 777 line
Right.
But A is killing its own products A330 and A340-300.
A350 is sandwitched between 777 and 7E7 and A only has A300-600 at the lower side of the family.