SEN probably do make more money per passenger on paper, the point you've all missed is sen are the airport, handler, caterer, retailer, fueller, exec lounge operator, car park operator etc. it's 100% in house. So it will APPEAR that they charge more per passenger but in reality they don't. In reality the other airports only charge for a part of these services and the rest of the revenue goes to third parties which will not reflect in the apparent revenues of the airport but are still charges borne by the airline at every Airport.
Heathrow charge a minimum of £1,500 for an a319 to depart. That's a minimum and only the runway charge ... Do Sen charge more? Not a chance.
The fact that Sen is not attracting airlines is because it's a viscous and competitive market place ...
These reports are useless and don't mean anything, as has been said what is agreed is commercially sensitive and only the parties involved actually know.