This is not a flight sim, its an arcade game. Flight characteristics are non-existent. There is almost nothing immersive about this game. The story is shallow and not very interesting, and due to the arcade style planes there is no sense of speed or achievement. Its a breeze to fly and fight.
However, if you take it as an arcade game it is quite fun. You can have a blast shooting down planes, heli's, boats and tanks, etc… There are some good camera angles (such as OFF mode, and following a missile on its journey to the target) and it can get quite intense when there are is a lot of enemies.
Overall I probably wouldn't have bought this game if I had known what I know now. I would suggest the Blazing Angels games over HAWX.