The few games I campaigned through China I used the jap aa gun to try and kill that ftr. I remember it worked at least once. a small stack against a chinese attack that is light on arty means China will have to bring the ftr to have the punch to clear the zone. This can work great if you are cutting the Burma road every round.
I also did air raid it the first game I played Japan too. I just don’t think that ftr is really worth gunning for. Now if it could leave China or attack the sz’s on the coast it would be dead meat.
I’d rather kill that ftr when its attacking than having to go in and dig it out when its rolling 4’s.