Well, in regard to any kind of 3D, 2D game - I'd have to say that both are equally enjoyable. I mean, I always liked the original Mario games - even if they were 2D. It just really didn't figure into the gaming enjoyment - whether or not they were 2D or 3D. Well, actually, for much of gaming history and my life, as I'm 41. there simply wasn't 3D games. I just didn't know what they were!
I have played 3D graphics which was poor though. And it can get ugly in terms of 3D graphics too. I mean those games have the poor shaders, faces, and desert etc. No realistic trees etc. So 3D can be poor in terms of graphics.
Does that lower the cost of buying the game? It should! Anyway, some might want to exchange lower price for good graphics, assuming that - either way - the game play is good.