Well like I posted above,Canon might be lying to us about the AF size/areas in the view finder.
So we might be assuming we are doing everything right, when in reality things are way different than expected.
So we might have to use spot focus more, or adjust our techniques.
I also saw another article from lensRentals.com , where they said the 7D version 1 had maybe the worst AF consistency... :S Or something was going wrong.
Even the t4I was better or the 60D. But then he said the 1dX/5D III and T4i were the best at the time.