Tough call. They are pretty equal, but I like Atkins' matchup this week against a beat up Steelers line way more than Wake's against a solid Ravens line. (is Oher playing?) ... but....
Since it's a little easier to double team an inside DL, and Atkins' now making teams do that, I think over the long haul, I say Wake, but in the short term Atkins should be your man for week 2.