Guess that person was expecting Lucky Star DVD sales numbers which were more then double the sales that Kannagi had, the most recent Lucky Star DVD (OVA) sold nearly around 32,000 in it's first week.
http://www.animenewsnetwork.com/news...-24-october-14
Gonzo for one for would love to have those type of sales, their most recent series Rosario Vampire hit the 5k mark which was the first time in years for them to reach that mark. Strike Witches Gonzo's other recent work being the first to reach that 10k mark since Vandread 2001. Yet A-1 has done it twice in less then two years with both Ookiku Furikabutte and now Kannagi. Goes to show well animated and good shows will sale if done well hopefully Gonzo will take a look at A-1 on how they do good quality series, actually they kinda have since Gonzo announce they will be cutting back on the amount of series they do each year by half 8 to 4.
Anyways like I said great sales for Kannagi wonder how Kuroshitsuji did which is A-1's other current series.