Well, a note in a side-bar maybe, but I wouldn't bet on them even lamp-shading the similarities that much.
Innistrad is a prime material world, is the thing. It is overwhelmed by ghouls and monsters, but it is not a mystical pocket dimension like Ravenloft. It's a normal world, with people leading mundane lives, but with more vampires and Inquisitions.
Technically it's an entire Plane in it's own right.