Get lost.
Try to put what I said in context.
I've not said SotN is terrible; I've said is overrated. And for a game that is by many held up as an AAA+ cum laude game it's very easy to be overrated. I'm replaying SotN; it's a very good game, and I love some of its bits. However, there's a massive amount of flaws in it:
- Level design: SotN introduces the Metroidvania formula without perfecting it. In short, Metroid works better because it's
consistent. SotN is an hot mess because navigation between the different parts of the palace is horribly disconnected. You go from great pieces like the library or the catacombs to the caves to the stairs to the hallway in a matter of... seconds.
Classicvania games were built upon the idea of "stages"; each stage being consistent and possibly leading to something (you start in a pretty generic graveyard area then climb a hill then reach a mausoleum etc). There is a "narrative" in the stage; it's consistent. SotN essentially designs areas according to their label, and almost never does actually anything to *describe* the area in question.
You now are in the "marble corridor with axe lords area": cue an endless repetition of the tileset filled with monsters. It's a corridor-based design that for the most part leads nowhere and sucks a lot out of the experience. Dracula's Castle doesn't really feel like a place at all; it's incredibly game-ish level design and while it does work in many ways, I still feel that Castlevania needs to wove the narrative in its level design. LoS did this very well, and CotM did it a whole lot better than SotN. I'd simply want to see some variation inside the various tematic tileset: the missed opportunity is huge here, and the ending feeling is that this corridor is entirely identical to itself and eventually leads to another area transition corridor that leads to a corridor. Once again, play Odin Sphere: it's a corridor brawler that doesn't give up on delivering beautiful and *evolving* setpieces, something that SotN doesn't even attempt. And that's why when you get to places like the top of the towers or the clock you face blows off: it feels like you actually gotten somewhere, that this place is a *place* but it's only good for contrast with the rest. The entire game should be like that.
- the level up design: I love RPGs. It's my favourite genre. I completely bloody love RPGs. I want a level up system in the next LoS if possible.
But SotN is a disaster. You're taking 1 damage per hit from stuff in 50% of the castle in a matter of 45 minutes, wearing the second armor upgrade you got. Sure, there's some decent scaling later on, but CV games should never be trivial. CotM has the same mechanic but it applies it with more wisdom. SotN is simply way too easy.
- the weapon system: this isn't a "CV without a whip = fail" argument, but the entire weapon system in SotN feels lackluster. None of the weapons Alucard gets feels as cool as the whip or chain; they're simply underused. The game starts strong by highlighting the difference between something like daggers and swords (the morning star also feels fresh). But as you proceed on and see that 80% of the weapons in the game feel the same the oomph is gone. Cue CotM, and what they did with the whip, and you see why SotN misses out on fun.
- Story: CV never had really good storytelling, but it had great atmosphere. You could imagine those storylines more than seeing them told. It played with your imagination. I was hooked as a kid. SotN boldly implemented quite a bit of voiceover, but its enfasis on exposition (as sparce and disconnected as it felt) sort of sucked something from the fantasy. It wasn't you and Belmont anymore, going through a story told by its environments more than its text; you were stumbling in people (well, 3 people) randomly while running around in the castle for no apparent reason, and the story sort of just got in the way. It's probably a personal remark, but once again later games did it much better.
That's my entire point on it being overrated. It's a good game, a great game even, but I see it as a B grade Castlevania because the good things it introduced were almost universally done better in its future iterations, and the bad things it introduced still plague us today. One thing it still has going for it is its colossal size: it's a huge game full of things to find, loot, equip and level up. But I'm playing SotN and CotM at the same time and I can't help but feeling CotM is the superior game by a STRONG margin. And I hate playing on handhelds - heck, if anything I love dipping in SotN because of how comfortable the controls feel.