The drop chart is also including the drop anything rate (DAR). See topic here:
http://www.phantasystaronline.net/forum/index.php?/topic/9785-the-drop-rates-on-the-new-chart
A lot of drops "appear" to be lower than before, but most of them are the same as our old drop rates. Most notably, heaven striker appears impossible to get now. It's the same drop rate that it always has been, but now includes the DAR calculations in the drop table.
Chuk explanation from that thread: