The game has hours of terrible stealth segments
Please, it's 20 mins, max.
Well that demo I played when I grabbed MoF for the PS3 definitely seems misleading...:shrug
Seemed cool and whatnot, was really eager to see how it would go over; story-wise and gameplay wise. I can honestly admit that I'm not overall impressed. Only got a little taste of it as a buddy of mine grabbed it because he lives Drac (no prior CV experience mind you).
He was not that impressed, which says a lot. He then asked me what I love about CV so much and I told him that he's 25+ years too late to even understand. If only he knew how things were, compared to now. Oh well. I just got 19000 kills with richter on CVHD so that will keep me going for a while on the ole sony. 
For an old old old school fan that still likes modern action games, LoS1 is pretty cool, you will find people saying it's similar to Castlevania IV (I wouldn't say that) and it recovered the sense of journey the series lost (until Ecclesia which sadly was a step in the perfect 2D direction but it was the last IGA could do). The world has some bright colorful parts that while weird at first leave an impression. It gets dark later, however. Pretty good game, great, even (IMO). It works pretty well as an origin story (it's the first time we see the pre-Dracula world and the contrast is evident).
MoF is a weird hybrid between metroidvania "Castle only" mentality and ClassicVania "stages". It's similar to Castlevania 1 in that regard (And has 2 Dracula battles , which were cool). It's flawed on a deeper level than any Castlevania I've played, it has the right idea, but the execution lacks mastery, The story is the best in the series though. The game is far darker than LOS1 and the aesthethic is more gothic. Combat is cool for the genre, but floaty controls take some time to be used to. The level design isn't the most imaginative ever but it works. I'd say it's a game for everyone who liked LoS a little more above average. The most platfformer of the 3.
LoS2 is... a weird beast. The combat from LOS1 is polished to the max, playing as Dracula
feels good, the bosses are out of this world, the story is intriguing enough until the ending, and the Castle is amazing. Yet, well, the modern sections are a mixed bag (good exteriors, TERRIBLE interiors) and the game suffers for trying to innovate "too much" (as one of the criticisms of LoS1 was that it was a pastiche of popular games) and adds stealth sections/rat traversal which at best are innoffensive, but they are certainly not fun. The modern locations are as cookie clutter as they come and the ending is, well, underwhelming (it was apparently designed to be "open to interpretation" but that ws not well messagged, at all). LoS feels incomplete too, it is evident that many things were cut during development and you see characters appearing and dying in 10 minutes, and things like that. It is known that they had internal problems. What a shame. The level design is pseudo-open (Arkham Asylum style) and the traversal mechanics work. It is overall a game that if the main reason you liked LoS wasn't the variety of locales and sense of journey there's no reason not to play, forgiving a few sins.
Still, LoS1 is the most solid of the three. The trilogy could be better, far better, they had the most interesting ideas the series have ever seen since SOTN and all the good intentions but it was apparently not enough. It is still probably the only reason we have Castlevania right now so in a sense there is some appreciation to be had. And, hey, they made Castlevania work in 3D, and when it shins, god it shines. The series future is at the same time the most uncertain but the most exciting it's ever been. Who knows what's next. but it cettainly be different and, at least, founed on a solid base.