I would like to start by saying that the first rule of selling a product, be it a comic, a movie, a videogame or even a TV is that you do not insult your own previous work/product. Let me give you an example. Apple is releasing the iPad. They did not come out and say that the iPhone was a piece of crap, comparatively.
Before even opening the book, Mark Millar has told his readers that Kick-Ass is shit compared to this book. What does that say to all the people that bought and enjoyed Kick-Ass? What does it say to the people that worked on the book? Or even the artist of the book? It says that Millar’s previous work was in fact shit and that it was wasted time and money. You should have waited for Nemesis instead. Sorry if you bought Kick-Ass because it was shit, so says Mark Millar.