He said IAG want all aircraft across their fleets to be identical and they are going to give them all 188 seats.
Really?
Well I believe there is an element of truth in that.
As was explained to me by a manager at a certain airine the master plan is that IAG as an entity buy the airframes, only on delivery X years down the road do they decide which "airline" is going to actually operate airframe Y or airframe Z. - Vuelling, Iberia, or BA etc. hence the idea of ordering a common floor/seat plan.
Please don't shoot the messenger.