I laughed when I read that spec: "Pro Grade Autofocus (Not 7D Like)."
I thought, "Geez, I hope they don't come up with something MORE sophisticated than the 7D, it's already way smarter than I am."
I've had mine for over a year and a half now and I have to admit I still don't think I've mastered the autofocus system. No complaints about the camera, just the user.
The longer I own the 7D the more I learn about the autofocus. In my opinion it's one of the most sophisticated features of the 7D and it takes some real work to master. That doesn't mean you can't get good, sharp shots easily, it just means that if you don't use it properly, you can get misfocused shots.
I'm not saying in your case it's user error. But, I know in my case, almost all problems I've had with focus have been my fault, not the camera's.