Aside from some odd inconsistencies, I wonder if New 52 Diana is more powerful than Pre-Flashpoint Superman. She seemed to man-handle Doomsday away from Superman with ease, yet New 52 Doomsday flattened her.
How does Bruce's body armour react to shots from an AR? He already took a shot point blank to the back of the skull and it didn't even phase when he was fighting all of these goons. Nothing's stopping him from disabling Frank's rifle either. In general, Bruce seems to be a tank in terms of street level characters. On the other hand, Frank murdered half a dozen prisoners while taking a few hits himself in that prison corridor scene.
Also in that same scene, Batman got stabbed through his body armor. I'm not an expert, but an assault rifle, or a shotgun point blank would, at the very least K.O. Bruce. With Frank's marksmanship (purposely shooting less than an inch away from killing Murdock), I think he'd have no problem hitting the exposed cowl either. This poses the question of Frank's durability, of which we've seen him get shot, stabbed, and at one point take a drill through his foot and continue to fight, all when he didn't have body armor.
I like your post, good job! Perhaps bloodlusted, Frank would be capable of killing Batman with a few kill shots to the chest. Realistically though, he had no idea Daredevil would've survived getting shot square in the forehead, but obviously that's all due to plot. Given that both characters have four hours of prep, I wouldn't count out either so easily as Bruce had a contingency for the armed men without planning ahead.