Keaton and Bale both kick ass. FACT.
Keaton was of course the first live-action Batman I was exposed to. Ever since I was five years old, seeing that haunting shadowy first glimpse overlooking the city, the coming down out of the smoke in the background, beating the crap out of the muggers, and then Keaton on that rooftop holding the mugger and saying,
"I'm not going to kill you. I want you to do me a favor. I want you to tell all your friends about me."
"What are you?!"
"I'm Batman."
And jumps off the rooftop, is one of my favorite Batman moments. And B89 is one of my favorite films. Its closest to my heart than any other Batman film. This moment IS Batman. But like I've said, they've both brought something unique and great to the role. But both have done it right at the same time. One or the other does something that the other didn't, and it goes from there. They're evenly matched. And anybody who makes a lame ass excuse about Keaton being "too small or skinny" those are ignorant people.