Okay, see, there are MOMENTS that I really liked this comic, but so many little things just made it feel "wrong." And that last line was one of them. In fact, my main "pet peeve" with this whole mini was the whole sexuality-of-the-Joker thing that Smith kept kissing the edge of. Morrison did it fine in Arkham Asylum-- just a hint of tension, just enough so that we get that Joker thinks it's the best way to mess with Bat's head. But all 3 issues just seemed to me like Smith was saying, "Hey! Did you know that often crazy people are sexually deviant? Look at me stress the Joker being sexually deviant! Dude, I'm cutting edge!"
And also? If we're supposed to take this as canon in all of Batman-world? I am totally rooting for Jason Todd to kick Batman's ass again. Seriously. He deserves it.
*grumbles* Nolan's "Don't have to save you" is so much more heroic...