How do you explain Nintendo dominating the top 20 on the week of 2nd May 2015

[Conina]

How do you explain the urge to cherrypick (only the top 20, ignoring the overall sales data) within even cherrypicked data (only one week or one region)?

Just look at the yearly software sales so far: http://www.vgchartz.com/yearly/2015/Global/
Not much Nintendo domination there to boast about.