If anyone is interested in anecdotal data [0][1] regarding sentence length for equivalent meaning, I have to use both French and English every day, alternating between them (spoken and written) all the time. English is almost always shorter than French, which is more verbose. I am used to "thinking" in whatever language I'm using to talk/write and have noticed many times that I'm a bit slower in French, even if it's technically my native language. It might also be that French seems to have more alternatives to say the same thing in different ways, but that could just be just me.

[0] C'est presque toujours plus long en français qu'en anglais. [1] It's almost always shorter in English than in French.