Interesting, it's exactly the opposite for me. My understanding of voice is much lower than of reading, and much slower. I think the biggest factors are that

Interesting, it's exactly the opposite for me. My understanding of voice is much lower than of reading, and much slower. I think the biggest factors are that reading is faster than words are typically spoken, yet I can also pause and dwell on sections I don't get the first time, so I really get it and then proceed. Obviously, brains work very differently, so there really is no one-size-fits-all solution; we need the varied methods.