Another point is that body fat percent matters a decent amount for how "buff" you look as well, although there's a tradeoff where you won't build muscle as quickly if you're starving yourself.

I'll add that there's a considerable opportunity cost in reaching the low body fat levels necessary to achieve a "ripped" appearance. When I made it a goal to hit seven or eight percent body fat, it was a project that not only occupied about a couple hours every day and imposed harsh limits on what I could eat, it led to my being preoccupied with my body condition even at times when I was working on other things.