To be fair, this is very person-specific, and this distinction of preferred learning methods is a common topic in pedagogy. Some folks, myself included, are auditory learners, and will tend to retain more from a spoken lecture than a reading assignment. Some folks just can't retain audio as well as reading something, or need to take notes to retain (even if the notes are not consulted again).

This is why being a good teacher requires not just presenting the data in a good way for your learning modality of choice, but for all of them.