I'm not going to comment on pilots remuneration, however I can say that the IT dept. at AN pay something in the order of 20% less than the IT industry standard. One of the main reasons the employees stay is the "other" benefits, such as ID90 travel.
As a pilot you may not realise how important the IT operations are to any aviation business these days, but let me tell you, if there is no IT, there is no company. Just the same as can be said for tech crew, cabin crew, maintenance, accounts, reservations, and many other business functions.
To put it in another light, I wouldn't like to suggest that the IT staff are offered the choice of a pay cut, or leave, because they'd leave.