I'm afraid that the observation of this Pentaxian is right..
http://www.pentaxforums.com/forums/pentax-news-rumors/130967-pentax-losing-momentum-japan.html
I have just checked, Pentax is still not doing well for the latest BCN ranking as in the last week of January:-
http://bcnranking.jp/category/subcategory_0008.html
Best Pentax result is the K-5 + DA 18-135 kit set, which is only ranked at No. 40. :-(