No, I think she's a stronger actress than Colin is. (Not that Colin, bless him is not a lot better since the pilot. As is Bradley James, come to that. I think they're just new).

She's worse at covering her accent (Colin's got that one down), but no, it's not just the shallow.

Though I will admit to a soft spot for Keira Knightley. She may not be the world's greatest actress, but she doesn't seem to think she is either, and is all bouncy and cute in interviews. *pets her*