Those are great stories about chivalry in crazy times. However things are not very simple. Honour and ethics are a little bit different things. Some pilots maybe tried to be like knights as everyone should try to be.
But why they were flying in the first place? To be a knight of the sky or to defend their country and people to make the war end? To do both? To do both was impossible. Either you were knight of the sky and let the enemy live, or you defended your people and wanted to end the war.
Which was better? I can't answer to that. Both were honourable and ethical things to do, and in the same time both were dishonourable and unethical to do. The pilot who you let to live could kill 1000 civilians or shoot 10 chutes next week. Were you not supposed to protect your people? Not blaming anyone or pointing with finger. Absolutely not doing that.
But again, you are free to hate me
Edit: This was response to I/ZG52_Gaga.