I think that is a bit harsh on Mark Millar but I found this on Moviehole.net about Kick Ass 2:
"According to Mark Millar (means a lot, I know), "Kick-Ass 2" has been officially greenlit.
Talking to BBC's Radio Five, Millar said (and thanks to Bleeding Cool and IO9 for the words) : ''The estimate is [Kick-Ass] will do 100 to 150 million on DVD based on the American sales, you know, so it’ll end up making a quarter of a billion on a 28 million investment. So It should be okay. So the sequel’s greenlit, we can go ahead and do the follow up now, you know. The first made so much compared to what it cost it would be crazy not to"
Considering "Kick-Ass" was lucky to score $100m, not to mention director Matthew Vaughn's commitment to "X-Men : First Class", the sequel to the 2010 flick is - despite what it's author says - a long ways off yet, I'd think."