I am looking at it from the opposite point of view....
What about Duke is impressing me this year? The Tarheels depth is too much for Duke. Honestly, I'm scared shitless about the refs in this one. If you saw the Virginia Tech/Duke game, you know exactly what I am talking about. I don't know if there is any way I can be convinced that Duke has a better team than the Tarheels. The Tarheels will be ready to play and will be very prepared.
And to answer your question directly, the Tarheels havent played that many away games anyways (neutral site games don't count). So to say they are a good or bad road team is jumping to conclusions. The sample size is too small