You can read the complete Article #17 and Analysis here:
Switch Vs. 3DS Japan:
Gap change in latest month: 470,654 – 3DS
Gap change over last 12 months: 959,537 – 3DS
Total Lead: 3,149,900 - Wii
Switch Total Sales: 9,902,896
3DS Total Sales: 13,052,796
This holiday season and next year should see Switch start closing the gap.
Holiday 2013 was pretty weak for 3DS in Japan and 2014 saw sales drop by 35% YoY.
When the herd loses its way, the shepard must kill the bull that leads them astray.