Batman might actually have some trouble taking Deadpool (ducks thrown fruit) I mean deadpool is as insane and weapon happy as The Joker, but he's got a hell of a lot more endurance...
Unless of course Bruce remebered his "Anti-Cancer" spray or more likely since for batdickery purposes his "temproary-anti-cancer" spray since he wouldn't want Deadpool to die, just be left momentairly undone by his own body...