In comparison to men like Rorschach, Punisher, and Wolverine, Batman is pretty neutral. Although I agree they could have found a better representative for Neutral Evil. Maybe someone like Black Cat?
Punisher's gotta be Chaotic Neutral. I can't justify putting him on the Good side of the scale, even if he does go after bad guys. I agree with @Gowi on Neutral Evil: that's your classic assassin type. Will do anything Lawful or Chaotic if the price is right.