Sorry, I made an error in my response (I thought you had commented on something I said). Whoops!
But yeah, it seems that Harmony of Despair went with the 2D stock tiles/sprites in HD. I'm not sure how it's selling, so I cannot comment on nit, but I know that ReArmed was damn awesome, and (so far) DKCR has the same awesomeness that the original SNES titles had, only now it's in glorious 3D instead of rotoscopic rendered sprites.
It's a very beautiful game, so I think the same can be applied to Castlevania. DXC had some issues (low quality polygon models, very generic textures in some of the backgrounds, the fact that it was on PSP...) but was definitely heading in the right direction. Ultimate Ghosts 'n Goblins, on the other hand, goes all out.