This is exactly right, and how it should be represented in a basketball sim game.
This is exact right as well. Unfortunately, the help defense in 2K11 (even though improved over previous iterations) is still lacking quite a bit. This why I think people are complaining that it is easy to drive into the paint and dunk. Some complaints are misguided though. You
should be able to drive past your man (even if he's a great onball defender) almost at will. What you should not be able to do at will is drive all the way to the basket. You should be met by help defense and in most cases, that help defense should be enough to force you to kick the ball out or dribble back out.
Adding onball defensive strength to the point where it is basically cheating the law of physics (as it is right now with the incredible lateral movement by the defense) is a terrible solution. The
only solution is to improve the help defense logic.