That still means for every £1 per passenger than Luton earns Stansted will have to earn £6. That's a huge 6:1 differential between two airports allegedly in competition, and when you consider the differential in airport charges between Heathrow and Luton is only about 3:1.
... and before the local fanboys round on me I am not suggesting that Stansted is over investing, it could equally be an indication of the degree of underfunding going in at Luton.