I have never understood why people ask such questions. I just shake my head and usually place my hand over my eyes and sighs.........because it is subjective. And something like this is very much subjective. I know people who are very hooked on the visuals while others value both and others care fully about gameplay design and story etc. Im a gamer too and i prioritize gameplay before graphics. We are all so different and this is so subjective. One can of course say that the market has a certain "expectation" though.
But personaly i believe it will all work out as long as you officialy state your game's purpose and intention. If it is supposed to have low-end visuals because of stylistic reasons then say that