Panthers are a good defense on the back end, and Brian Burns makes them legit for the pass rush.
It was a bad day for Matt Ryan, is more what I would say. Pitts had some pretty rough drops as well.
But you'll note that nobody is in here getting on Pitts for being a wasted draft pick (ok, or having a down week)... because it still "worked out" by the process. Tied for the team lead in targets, and was once again targeted way down the field as a primary read on passing downs.
Ridley stepping away is going to be the true test, though. The results may be a bit more sporadic - there will still be boom weeks against teams that can't stop him, but teams with good DB's will now load up to stop him (like today). He got a lot of attention. It'll be good for his growth as a pro, at least.