A quote from Grant Morrison, over on Newsarama. Might help shed some light on the "Batman breaking his no-killing rule" controversy:
NRAMA: Superman and Darkseid - for those of us who didn't attend night classes on New Genesis...despite being shot through the heart, Darkseid is still alive, he's taking aim at Orion to basically start the whole story, and the Flashes lead the Black racer to him...and that kills him? I feel a little slow here, but when did he start falling through the multiverses?
GM: Again, I dont think you need to know anything about New Genesis or any other information apart from whats in the story. Darkseid wasnt shot in the heart. We all know Batman doesnt kill people, hasnt killed people for 70 years and isnt about to start here. Its a big enough deal for Batman to pick up a gun. He winged Turpin knowing that the Radion in the bullet would be enough to poison Darkseids divine essence. Radion only kills gods after all. It slays ideas. After that shot, Darkseid is dying, just as someone with radiation poisoning might slowly expire, as Superman explains in #7. The Black Racer drags him struggling away into oblivion over the course of that issue until nothing remains but the fading, ghost-echoes of his malice.