Hardware Why no antialiasing ?

[M[u]ddy]

3D antialiases in its own right. Your binocular disparity creates a light blur. This is the eye's "natural" anti-aliasing

No. The eyes natural antialiasing works totally different.
Your photoreceptor cells get hit by several rays of light, which automatically creates an average.
It's basically the same as full-scene antialiasing.

 

[pachura]

Pokemons in Pokedex do look antialiased - even in 3D mode - but only horizontally.