@SMXLR8: OK, so like I said, robin because he is better trained and has gadgets. Plus the bat factor probably rubbed off on him.
@UltimateHero0406: but Li has magic and skills...
Which Robin are we talking about?
Dick Grayson - Robin 1 - Currently Nightwing, spent a short time as Batman
Jason Todd - Robin 2 - Currently Red Hood, spent a short time as a more lethal, armoured "Batman".
Tim Drake - Robin 3 - Currently Red Robin
Damien Wayne - Robin 4 - Current Robin.
Whilst the other three (to a large extent), were trained only by Batman (especially in combat), Damien also has several years of training by the League of Assassins under his belt, and knows certain techniques the other three don't (e.g. Leopard Blow).
Director David O Russel and Crew do the Hustle in a baroque comedic farce with some real humanity to it.