Not necessarily. Monkey Island actually imposes challenges. This game is just too easy, that's actually the only issue I have with it, but it's a big one. I guess they didn't really want to commit to the whole adventure thing because people who don't like adventures will just stop playing if they can't get it right.
I've heard the ending sucks, but I only rent the game and it's due tomorrow. Not planning on renting it again, so I don't care for the ending. That new face motion thingy is awesome, but it doesn't make up for the lack of difficulty in this game. Maybe that's just the early cases though, I don't know.
Well, it's not as hard as Monkey Island definitely, but it's still the same genre of game. 80% of the game, and the game as its core, is about searching for clues/interrogation/solving (very easy) puzzles, it's just put in a 3d world where you can drive around and have to shoot someone once every few hours. I suppose you could call it action adventure, but when "action" is only about 10% or less of the game, it's hard to do so.
The game isn't hard, though, that is for sure. The only challenge comes from completing each case with 5 stars, as you must get all evidence (you can miss evidence sometimes), get all interrogation questions right (very difficult in the second half of the game especially), not do any vehicle damage, etc.
The only thing that gets harder as you progress is interrogation. They become more and more difficult to read, and you have to pay attention quite a bit to guess if they are lying/telling truth/doubt them. Other than that, the game has no added challenge as you progress.
The ending is terrible, though, the worst ending of any game this year, and probably last year as well.