The survey was basically questioning residents about the future of a hub in Britain and whether this should be at Heathrow or Boris Island
Actually it wasn't.
The Hillingdon and Richmond surveys only asked 2 questions:
1. Should a third runway be built at Heathrow? Yes/no
2. Are you in favour of more flights into and out of Heathrow? Yes/no
The Hounslow survey asked the same two questions, plus another 9 covering topics including runway alternation, night flights, noise insulation and the importance of LHR to the local economy.
I don't think the aim was to get the public to do the work of the DfT, Commons Transport Select Committee and Airports Commission in determining the UK's hub strategy.