<<I see well, in brown's case I honesly think He thought he got MvR(probably not) and really did feel bad about actually seeing someone he thought he killed.
In Barker's case, he felt shame for actually getting surprised. Probably embarrased about his wounds too. Well that's my take on it and most author's take too.>>
These are pretty close to what I've read about the two men. Added to it is the fact that they were probably hounded to some extent for things that they were tired of talking about. Alec Guinness felt the same way about his role in "Star Wars"--after an unsurpassed career of screen acting, he was always being hounded by strangers about a minor role.
Brown earned his DSC when he took off that morning, sick as a dog, and did all he wanted to do when he saved his friend
Wop May. Killing Von Richthofen seemed to give him no satisfaction.
Barker was an exemplary leader in the air. His men admired him for it. He got all his "notice" for a fight that he thought reflected little professional credit on himself.