As I say it has now CHANGED. No we do not want to specify exactly what as that ruins the whole point of it. But it should be slightly easier. It's not "how do I beat the game? which is what people seem to be trying to do - it's "how would a pilot fill this in?"
Don't go by the number - the number was NEVER meant to be a guide to the player. How do you know it meant what you thought it did?
Simply fill in a witness from your squadron, ANY that flew with you. Leave off the rank. Type a bit about the engagement. Height, what happened to the enemy, type, colours, where, rounds fired maybe, job done that's it. There have been several examples of how to do it. It is not rocket science or difficult it's meant to be a paper claim form. The only small give to modern technology is that you must "pull down" the number of craft, and pull down the craft type that's it.
If it bugs anyone simply turn it to easy, or off in workshops.
The WHOLE point is it's meant to be realistic as possible - not find the magic words to beat the system ;) so stop thinking that way and you'll be fine.