Well like most posters on here I would prefer to deal in facts.
Heathrow expansion: Manchester Airport boss urges government to work with all airports to realise economic potential - Manchester Evening News
The CEO has indicated Manchester would generate £75bn. That's MORE than the revised Heathrow figure I suppose you would give THEM Carte Blanch to expand on that basis.
The airport commission report has some airbus size holes in it and when the forecasts are disputed not by a protest group but ANOTHER lever of government you know you are in trouble.
Deal in facts and you win the arguments!
Deal in fiction and the papers will have a field day