Whatever the situation, I have gotten numerous GV kills in every manner of aircraft by strafing and having them tower or get killed by a GV.
I have also been in GV's and killed GV's, not logging the kill because they were straffed by someone.
For those who do it to steal the kills, it sucks.
Roger on the IL2 and Hurri...I have killed plenty of tanks with them just with the cannons. I love to track a tiger with a hurri. Generally, if I am strafing GV's, I am trying to slow a base attack. I don't ever go into TT to strafe GV's.