Well, I have seen plenty of complaints about The Witcher and the Hundred Knight, but there are a few reasons why Dragons Crown got more notice.
First of all, there was a lot of drama surrounding Dragons Crown, and the situation escalated quickly. Someone criticized it, and the creator responded with adolescent remarks and art. His response was basically "lol ur gay." This is what got everyone really talking about the game, since the reviewer and creator both started acting like 14 year old gits. To my knowledge, that hasn't happened with the games you mentioned.
Another reason is that Dragons Crown became what we call a political "football." Kind of like Joe the Plumber back in 2008. Dragons Crown just happened to be around at the right time and place. The debate was never really about Dragons Crown at all, it was about feminism. Dragons Crown was just the example everyone used because it was new, and because it perfectly captured what the debate happened to be about. We can't argue about every instance of sexualization in gaming, so we pick specific well known examples instead. The examples don't really matter, they're just a reference. Dragons Crown basically just ended up being exhibit A. What matters are the ideas being expressed.