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.
Haha I felt the same way when I got the 7D... on prior upgrades from the 10D through 50D I felt secure and had a good grasp of how those cameras worked and the upgrade was pretty seamless, just grasping new bells and whistles and layouts from model to model... The 7D was the first camera I had to break open the users manual to learn because it was so sophisticated... 95% of my single shot photos are tack sharp with a margin of error for user error and the rest other burst shots which depending on the situation may or may not be 100% tack sharp or not. I was able to shoot at the Reno Championship Air Races prior to the major incident which shut down the races with the 7D and 70-300 L Lens and clearly at those speeds and so close the ground, the majority out of 600+ images were acceptable focus with 1/6 being 100% tack sharp and even fewer being portfolio quality in my opinion, but that's based on other factors outside of the camera/lens... Given the tough nature of jets racing nearer the speed of sound, that's not a bad ratio in my opinion shooting in burst modes.