A pair of analysts talking to Gamaustra have voiced concern and tried to find causes behind the recently reported double digit drop in game sales for January.  Wedbush Morgan Securities analyst Michael Pachter told the news outlet that the month s thirteen percent year-over-year decline in the face of a solid software lineup gives us pause.   Pachter pointed some of the blame towards Nintendo hardware sales, saying a combined year-over-year drop of 300,000 units of Wii and DS sold this January translated to $30 million less in software sales.  Cowen Group’s Doug Creutz told Gamasutra the blame lies in new software and catalog sales.  Creutz pointed to disappointing sales of high-profile new releases, citing how sales of 624,000 units for Mass Effect 2 fell short of his forecast by more than 24 percent.  He said other examples of software woes are disappointing January sales for other new releases such as EA’s “Army of Two: The 40th Day” and THQ’s Darksiders, as well as a larger than expected quarterly sales decline reported by Activision.  Read more at Gamasutra.