In the new CCC it's under Gaming (like on my screenshot, just not that blurry

). In the old one it was under 3D -> Antialiasing, or something similar. Pretty easy to spot. And again, MSAA in Borderlands is not applied on so many edges, it's not really worth it. With MLAA offering such a huge IQ jump, I don't really know why people stick with the older modes for this game
Also, why are your Batman settings so low? I'm running 1920x1080 all maxed and in-game MSAAx4 (best IQ results) and the game runs perfectly.
EDIT: Check it out:
Settings:
Results: