It's not.
"Hey, look at that girl/car/tree/Chihuahua" isn't a left nod. It's eye contact, then you look at the thing.
"Come here/go there, let's talk" isn't a right nod. It's a weird neck movement where your head is kind of sideways and you're nodding in the direction of the place you want them to go. You usually use "Hey, look at that tree" first before you try to get them to go to the tree to talk.
Can confirm up and down are correct enough, though. Up is for people you know, down is for people you don't.
Graphics, as in graphical fidelity, polygon count, etc. are valueless to me.
Art style is everything. I don't care if I can see the pixels in the game, I still play the same SNES my family had 25 years ago. The game has to look good, and graphical fidelity is a tool to help achieve that, but it's only a tool, and useless without the appropriate art direction.