Whether or not your player drives for a layup depends on his Driving against their opponents OD. So the better the driving, the more layups they'll attempt when they have the chance. Then their IS is matched against their opponent's ID.
My understanding is the first two sentences are correct but the last one isn't.
-SB plays a bigger role in defending drives than ID.
-DR matters on the shot itself too, not just the setup, with IS also playing a role.