(From left to right: Adam West, Christian Bale, George Clooney, Lewis Wilson, Michael Keaton, Ben Affleck, Val Kilmer, Robert Lowery)
Lewis Wilson and Robert Lowery have little in the way of traditional Batman strengths. They lack armor, most of Batman's main gadgets, and they have the collective muscle tone of a sweet potato. However, they were actors in the 1930s and '40s, so what they lack in competent fighting skills, they make up for by being born in an era when you handled problems with alcohol and fist fights with your family members.
Adam West brawling looks like he's drunkenly fighting a ghost, and he lacks every manner of stealth known to man. His main strength lies in his unique gadgets. There are problems that haven't even been invented yet that West's Batman has created a gadget for. "Mini-teleporter stuck in your sex robot's ass? Try the Anti-Mini-Teleporter-In-Your-Sex-Robot's-Ass Spray, old chum!"
Michael Keaton gets beaten up by every character over six feet in his films. And often, he can barely be bothered to go out and do his job, instead just waiting in his office until the police absolutely cannot handle something. He makes up for this with psychopathic brutality. Why fight a guy when you can put a bomb in his trousers or just light him on fire with your fucking car?
"Sorry, dude. Shouldn't have crime'd."