Right but it doesn't have to be a kill shot. He's capable of punching people unconscious like any other hero with super strength. That's how he wins 99.9% of his fights. He's blitzed characters with his level of strength and durability with ease in the comics before. People act like not killing makes superman weaker, but not really. If we're going to get technical the hulk never kills anyone either in the comics. Most heroes don't.
But suddenly in these debates it's "supes will hold back while the other guy tries to win, even until he gets hurt or killed" I don't know why that's the logic people use because he never does that in the comics. As soon as he can tell someone's on his power level he goes all out. He's done it to the cyborg superman (he's actually speed blitzed him more than once when he wasn't in the mood for his bullshit), Captain Marvel, Mongol, Doomsday, Brainiac, Parasite, Lobo (he punched Lobo into SPACE one time when he pissed him off)
People acting like he holds back and just lets people whoop his ass all the time don't seem like they've read many superman comics.