For example, amount of written text was higher among Word novices than among LaTeX experts, with overall less mistakes. The only category where LaTeX users produced more content than Word users was equation text, and even in that case, authors suggest that the difference in productivity between Word experts and LaTeX experts does not differ significantly.
Disclaimer: I like LaTeX a lot.
[1] https://journals.plos.org/plosone/article?id=10.1371/journal...