Pinnacle is in a new hub, new airline, and a new plane(although same aircraft type) I remember chautauqua starting off with continental was horrible as well. As Pinnacle Gets used to ATL, the performance will go up and I expect them to be one of the DCI connection airlines left when its all said and done.
Delta will use their sheeetay performance numbers against them and give them the boot like Mesa. Peace out Pinnacle.