Excluding accessories and digital downloads, it was probably in the top 10 of Amazon's Gaming section for most of last month. I didn't think this would manage to chart on the NPD at all, but it probably has a shot......given that it had probably 4 weeks of sales in the April NPD. I'm not sure how reflective Amazon is of the overall videogame market though.
Star Wars Kinect barely in the Top 50 now though, and the late release of a demo indicates they probably want to boost flagging sales. Strange to think what's become of what was, at one time, supposed to be the Kinect's killer app.