I can't definitively answer that question, but considering cats are for the most part solitary and territorial animals, another cat may, in fact, deter the kitten from coming back. I currently have one male cat that will befriend kittens, but every other cat I've ever had chased other cats and kittens out of their "territory" (your house). Offering food outside or in a trap is your best bet.
 
I'm not sure about catching cats in live traps, but with mice, opossums, and raccoon I've always been taught to place the trap in the paths they walk. For these animals, this is against walls, parallel. I would figure cats would have the same rule, but again, I can't definitively say.