I also think Revelations nearly maxed out 3DS, which also was their goal.However they mentioned that it's -still- possible to geta bit better graphics if they keep working on the machine.
Sakurai also mentioned that Kid Icarus Uprising also maxed out the 3DS, even though it doesn't have the same level of textures, since you have to take into acccount the draw distance too. That's why they didn't implement dual analog control, because as far as he said, there were no resources left.

Watching the events of the cosmos unfold in tears and solitude







