Also, speech is probably bottlenecked by speed of thought, not making the sounds. I recall some study showing that data rate is pretty consistent between languages, despite wpm varying significantly due to language verbosity. You can try it yourself: try to quickly repeat “one two three four five” then try to read a paragraph out loud as quickly as you can, I bet you can feel the first strain your muscles and the second your brain, and I bet the first blows your typing wpm out of the water.