From what I understand there is no comparable product in terms of fuel efficiency; up to almost twice as efficient as Boeing and less so to other competitors. So simply comparing sales cost is silly. I have no idea about other operational costs. "Every" aircraft company receives enormous tax incentives and subsidies and who the fuck knows what that equals out to but the experts.
Trade economics are sooo complicated.
Pretty sure though that a 200+% tariff determination hurts everyone.
Expect Delta to weigh in with 75 undelivered orders.