Batman literally has plans for defeating every Justice League member if they go rogue (except for Wonder Woman because she’s just that awesome and terrifying).

what does batman have to do wth bruce wayne?

Well, since it’s Tony Stark vs Bruce Wayne, that means that they are not fighting as superheroes. And let’s be honest, Tony doesn’t have a lot of hand-to-hand combat experience and Bruce is built like a house.

Tony is missing ribs ok, probably some lung capacity. If he’d still got the reactor he’d be double fucked. Bruce would go straight for the chest.

Not to mention that Bruce is a guy who fights with his body. Not a mech.

“Arms Dealer beats up hapless philanthropist who once tripped over his own shoes”