Languages differ in how much information they encode per syllable. But speaking at different speeds means they all convey data at the same rate
Source:
https://www.newscientist.com/article/2215202-all-languages-however-different-convey-information-at-the-same-rate/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home