|Quoting SandroZRH (Reply 7):|
There are still old A350 customers who have not ordered the XWB yet, which just goes to show again that they're not the same planes. So yes, the A350XWB is indeed the fastest selling WB to date, at least for now. Wether you like it or not is up to you.
I agree. The A350XWB is the fastest selling aircraft to date. No other aircraft has accumulated the number of signings that the XWB has. Nor the 787, nor the original A350. However, we could point out that negotiations several of the gained orders began much earlier, and were somehow tied up, way earlier than the A350XWB was even presented.
Notwithstanding, that the A350, and the A350XWB are two very different planes, and yes they were so that they had to redraw the contracts for the customers of this plane.
We might also point out that the rate at which these orders were signed was encouraged by spooling the orders together by the course of events and not intentionally. This rate should remain to have the A350XWB keep the title of "fastest selling aircraft", but it all depends of the speed at which negotiations gather new customers. If the rate of sales were to diminish, the rate of sales for this aircraft in the long term might be lower.
Think about this. If Emirates had placed their order at the Paris Air Show, instead of today, the rate of sales of the XWB would have been much better. 300+ planes within a year though, is something that the 787 has never done despite being such a promising aircraft. The key here is, I think, the orders were won to airlines like Emirates and Qatar Airways which place such huge orders in such a small time frame compared to 5, 10, 25 which are more common numbers for widebody orders.