they make Rs. 50-100 per ticket sold - irrespective of the cost. its not a function of ticket value but number of transactions.
Infact, I can use the same data points to argue that this is the best time to buy - broad trends in nigeria are up - oil is not going to remain at this forever - in a 2-3 year time frame it will get back to normal (reversion to mean). As for china, as economies mature, their tendency to do foreign/domestic flying holidays ("wealth effect") remains quite robust and that compensates to some extent on the trade issues. Case in point, the stereotyped japanese tourist couple who you see everywhere - who are wealthy even though Japan as an economy is hardly growing.
Just my thoughts -