You know, considering Batman's claim to fame is that he's human but compensates for it by always being one step ahead of the enemy, it seems that he was a little lazy here. I mean, if there's a group of criminals called "The Smokescreen Mob," maybe you might prepare for, oh I don't know.... a smokescreen?!
Back to the classics:
Arrrgh! Disabled by playing cards in my face! It's an attack for which there is no defense.
And once you've used up the cards....
That's right! Use the poker chips! Yes, they probably sting a little more than playing cards, but poker chips are about as heavy as checkers, which is to say not at all. Considering the maniacs always breaking out of Arkham Asylum, your average Gotham City lowlife was really pretty easy to subdue.
No, if you're going to throw something stupid in someone's face (like egg-rolls), do it right:
See? That's the way you take someone out by tossing something in their face!
.... loves fresh fortune cookies.
See you tomorrow!