"Cézanne could not draw, he makes the same drawing mistakes that every one makes in introductory drawing classes." This is not the case. Cézanne could draw exceedingly well. Drawing != photographic representation.
Obviously in this context I'm talking about drawing in the sense of rendering.
What about this one? Look like someone making mistakes in introductory drawing class to you? http://www.art-wallpaper.com/4056/C%C3%A9zanne+Paul/Sketch+a...
How about this? Beginner rendering perhaps? http://amica.davidrumsey.com/luna/servlet/detail/AMICO~1~1~3...
The problem is you can't quite bring yourself to admit that you picked a really bad example. You wanted someone who's technical deficiencies were made up for by their conceptual skill, and you chose someone who could draft their ass off and also had an incredible ability to choose fantastic things to produce.