Originally Posted by
jridge
It is quite relevant to those spending AAdvantage pesos, because there is a YQ surcharge for awards involving BA, and a much lower YQ for IB. Not so important for paid tickets.
Yes you are quite right
I was solely focussed on the possible YQ effect on paid tickets - specifically Oneworld Explorer tickets
But for AA award tickets the effect would be significant - pay the nominal YQ AA collects for IB flights vs the hefty YQ it collects for BA flights