Well yeah that particular one from IGN is much more a definite show of bias. I was just not aiming to say it was bias across the board with the reviews, as that'd be a bit "too conspiratorial" as I mentioned.
About the best I can do at figuring out why that reviewer said those things even though some are blatantly wrong is that:
With the castle thing, it's possible he meant in a more traditional way, where you go into Dracula's castle and didn't spell out that peculiarity, not just any ol' castle. Or he didn't play through even half of the whole game.
With the Drac thing, it's possible he meant in the more traditional sense of "the final boss will be Dracula and you will fight him!" Or he didn't watch the very last scene.
Also, like, for example, LoI, AoS, and DoS, you can say Dracula is in the game or you can say he's not, depending on whether you mean in the more traditional sense or a more technical sense.
With the music thing, it's possible he didn't recognize the couple of old songs due to the heavily different style and the fact that one is pretty obscure (Waterfalls). Or, with Vampire Killer, he meant the way they typically do it, which is a remix but still sorta close to the feel of the original rather than as a music box tune.
With the levels in plain daylight thing, he was probably going off general feel. It certainly isn't true that all levels are in daylight--although he didn't specifically complain that they -all- were from that quote--but since some are, it probably created a "bad" first impression for him (I recall that most of the daylight levels are early and more of the night levels are later) and he made a complaint based on the feel rather than a hard, numerical and logical counting of daylight levels vs night levels.
Did IGN end up pulling or rewriting that review btw? It seems like it, since I can't find one that meets those criteria but I remember Cox saying the review was totally off factually.