SQ and QF are reputable carriers with proven management records. If they are satisfied with A388 to follow up with more orders, then that is a good enough endorsement for me.

At the end of day, airlines are not just going to buy more planes because of the extra incentives. There are a lot of other investments involved in brininging in a new model. Yes, the additional discount or incentives do help to making decision easier, but airlines are not going to commit to additional A388 without being satisfied first with the performance of A388.

Fedex (and perhaps UPS), on the other hand, cannot wait for that long. I think it is premature to put a verdict on the A388. I'd rather trust the management decision of SQ or QF than any other speculations at this point.