Here is the week 25 update in terms of the two big consoles in Japan's path to be able to reach the commonly stated (in these sales threads) estimates for 2018 sales (2 mil for PS4, 4 mil for Switch) .
TWS - This week's sales
Switch basically flat with Minecraft and Mario Tennis releasing. PS4 drops 20% due to poor New Gundam Breaker reception and end of the Days of Play sale.
Also I find it completely hilarious over on the era MC thread how they're all hyping FIFA 18 on Switch appearing at the bottom of the list yet completely miss Winning Eleven on PS4 ranking higher. Nintendo fanboys, please if you're going to circlejerk about one football game's success to the World Cup (everyone bought FIFA 18 on Switch) then at least acknowledge the football game that sold better.
Ignoring the silly last part, I am amazed (looking at the table) at how the Switch outsold the PS4 2018 total so far with a game like Monster Hunter World out exclusively on PS4 in Japan. The shortages are long gone, so I expected way more sales. MHW isn't even appearing on the chart anymore (this one at least).