OoT 3D looks worlds better than the N64 version. There is absolutely nothing to prove about this.
People get confused because they think having the same style model for some of the characters means that those models in the 3DS version are using N64 graphics. They're dead wrong. =/ All the models that look similar to the n64 version (Like Zelda, Malon, Saria) are updated versions, but using the same model. People thought that just because Link got a huge model change (because he desperately needed one) that everyone else in the game would get one, too. They're only changing the models of things they think need to be changed. Characters like Zelda, Malon and Saria have no need for an update (well, Adult Zelda does. We still haven't seen her yet, though. I'd be willing to bet she gets a surprising update).
Style and quality are two different things. This game is looking beautiful. =)