LX, I think you're bang on, and I don't want to repeat much of what you said here.
He hasn't struggled as much as I thought he would this season in terms of keeping his man in front of him. Is he the best defender on this team? No, I think you'd be hard pressed to make that argument.
Is he, right now, an adequate defender? Yes. I think you have a team here that's slowly developing some ok defenders and you're starting to see some players who really won't fit the mold later on.