No it hasn't. As much as i love Layton i have to say that the actual writing wasn't that good.Cinemastique said:Layton has great writing. Same genre and gametype.
Just look at this video for example: http://www.youtube.com/watch?v=KbUHIBi23kE
At 5:46 Layton says "Something´s gone very wrong" like if a machine exploding and all the havoc created wasn't enough to see that the writers still made Layton point that obvious thing at the player.
You can't really expect a game to have the type of writing of a book but for an actual game the writing are actually amazing for both Layton and 999.