With Project Superman #3 culminating in Kal killing Subject Zero you’d expect that it was plenty cut and dry, right? I mean, that was the obvious ending, Kal beating the Doomsday DNA filled would be Superman created by his ‘father’ Sam Lane. So obviously it happens.
Though for reasons that stil baffle me, Lois (despite sitting on a nice little perch with a weapon we never see blow up) winds up at deaths door. I’m unsure if it was the Amazon weapon she had taken control of, or just fallout from Kal’s killing of Zero, but it creates a little cliche that she can talk about in her final moments.
Holding her as she dies, Kal finally discovers what he must do. He must be a Superman.