Re: Gods with Off Switches vs. Loaded Guns. DC vs. Marvel in Character Design.
Actually, yeah, my Batman would be bulletproof, because he's a multi-billionaire and knows some of the greatest scientists in the world, most of whom owe him favors, and wouldn't be stupid enough to run around in light kevlar body armor. He'd have some awesome space-age body armor (that still looks like his regular costume). In any case, it's less 'bulletproof' and more 'you can't hit him'.
Keep in mind, this is galaxy-hopping Justice League Batman, not street-level Gotham City Batman. This is the Batman that went toe-to-toe in unarmed combat with Darkseid and held his own.