Looking at Figures 4-6, the advantage of Word plays out only in the first case, that of continuous text. In the mathematical text example, the results are more or less the same across all groups. I will agree that tables are challenging in LaTeX, but there a bit more practice and experience goes a long way. It would have helped to show how the text from Figure 3 looked when produced with Word.

On a personal note, I think Computer Modern typeface is one of the most aesthetic and easily readable in the world. For full disclosure, I am a mathematician, of course.