Secondly that when choosing whether to operate to particularly airports airlines chose Dublin over Manchester.
But what airlines?
EK and EY were at MAN before DUB, AA opened JFK-MAN but pushed DL off the route, UA opened IAD from both and reduced EWR from both.
MAN has Quator, Air Transit have larger presance at MAN over DUB.
I don't see how DUB is harming MAN but APD is affecting Long Haul growth from accross the UK and needs to be reviewed.