I think the 'lack of variety' comments were in regard to the micro-games being grouped by how you beat them, rather than by the aesthetics (like the first one).
For example, in the original you had sports, sci-fi, weird, etc. and on some of them you had to press a button at the right time, or trace a path, or button mash as fast as possible, etc. In Touched, the games are classified by how you beat them; i.e. rub, poke, trace, blow etc. This can potentially lead to playing the same game over and over, just with different aesthetics.
Note: I haven't played this game yet, so I could be way off. This is just the info I pulled from the reviews I read.