I think that the mention in the announcement of "lowest possible cost base" and "low fees" indicates which side had the upper hand in the negotiations. The recent hints
about a move to Manchester no doubt helped persuade Peel to accept the deal.
I would think that ancillary revenue, such as car parking income, would be pretty low from Wizz flights. However it is a good to see this deal guaranteeing some level of security for both airports.