True Blue you make valid points here, and I am reflecting on the long stated comment that BA was losing a packet on the SuperShuttle BFS LHR route.
At the time that these accepted theories were first floated about, the cost base of the likes of BA were vastly different and BD's too. BA's has vastly improved, so if BA returned working on the same frequency and revenue may be acceptable. Same story for BD, although they wont be around. BFS was the incumbent and as such it had everything to play for.
This debate about which airport commands the best traffic as True Blue says we need same frequency, probably the same airline, probably the same fares to see which is most popular.
Particular airlines can attract the numbers, so take EZY on established routes from BFS they far exceed that of the City but equally established routes from BHD far exceed BFS e.g. MAN..
Yes BHD as many says is in a great location. There is great catchment, but BFS has an equally if not bigger catchment when you consider all the towns cities and counties west and south extending across the border into the republic.
EI-BUD