When Batman: Arkham Asylum launched, it debuted with PS3-exclusive DLC: access to playable Joker content. That partnership is repeated yet again with more PS3-exclusive DLC for Arkham Origins. Later this year, PS3 owners will be able to get exclusive access to Knightfall DLC--presumably named after the story in which Bane breaks Batman's back.
PS3 will also get an exclusive character skin, and it's pretty darn exciting.
Why? Because it's based on the 1960s show, of course. Yes, an exclusive Adam West skin.