Clark is a bitch.
A while back they split the whole JLA into two people each. And when it got down to it with the Batman and Bruce Wayne... Sure he couldn't scale up the side of a building anymore or kungfu the shit out of anyone, it was still young Bruce's rage and guilt at the heart of the matter pushing him to punish the criminal element.
Strip Davis of his powers and he might still think it's a good idea to kill Clark, becuase it is a good idea. The guy is a deush.