Originally posted by Deadline
It depends wether you think Batman killing is that important considering he already tortures people it's a next logical step. Quite frankly its illogical and to be quite honest people not used to the comics might not even understand it.Nolan changed alot of stuff as well. Batman is arguably significantly weaker in DKR two dogs and Joker with a pole was giving him major problems. Also look at the fight at the party comic Batman would have probably had those guys finished in a couple of panels.
Batman not killing is important. Unlike the rest of the comic book heroes that refuse to take a life, Batman is the only one by far to constantly bring up this moral in dialogues. How many times do you see Spider-Man and Superman give a speech about how killing villains is wrong? Not a lot. Batman brings it up all the time.
Batman's greatest enemy is himself. The greatest challenge he ever faced is trying to control himself from killing his enemies. Batman is not very different from the Huntress and Punisher. Just like them, he also wants to kill their villains and is not afraid of taking a life. But he tries to control himself because he believes killing is wrong. It is one of the most important challenges of Batman in comics. Plus, the Joker's main goal for existing in the Batman universe is to try to make Batman break his one rule. So if Batman kills, the entire image of Batman and The Joker changes.
Nolan made changes too. But at least he got the basics of the characters' personalities correct. As for the dogs and the Joker with a pole, it makes sense why he had a hard time beating them due to 2 reasons:
1) He was tired from taking out an entire SWAT team.
2) His vision blacked out for a few seconds.
He didn't have a problem taking out the Joker's henchmen at the party. But he was stopped by the Joker when he was about to throw Rachel out the window.
And although he wasn't so strong in those scenes, he was strong in other parts of the franchise. He took out an entire SWAT team, he was fighting exactly how Batman fights in the comics during his battle with Scarecrow's henchmen, he defeated Ra's Al Ghul in a combat battle, and he scared the crap out of Gotham's mobs to the point where they had to run during the day instead of at night (because they were afraid of Batman).