Just a small note: I saw on Amazon Japan that Switch is currently at the top of the daily chart, despite having remained below Smash since basically the start of the year prior to this. Maybe an indication of someehat increased sales? Or did Amazon have a promotion or something comparable?
And yes, I know Amazon is not able you've us a definitive look, hence why I am only posing it as a suggestion/potential scenario, not as a definitive claim about current week's sales (just wanted to put out a disclaimer).