What doesn't matter to a man?

When an opponent is worthy it doesn't matter to man who kills who.... the glory is in the fight. 

“I have never seen or heard of such a fish. But I must kill him. I am glad we do not have to try to kill the stars.” Imagine if each day a man must try to kill the moon, he thought. The moon runs away. . . . Then he was sorry for the great fish that had nothing to eat and his determination to kill him never relaxed in his sorrow for him. . . . There is no one worthy of eating him from the manner of his behavior and his great dignity. I do not understand these things, he thought. But it is good that we do not have to try to kill the sun or the moon or the stars. It is enough to live on the sea and kill our true brothers."