Considering that last year Nintendo released SM3DW+BF that week, -16.5% from last year is pretty impressive

Every single system is selling more in North America than in Europe or Japan. I live in the US. I can tell you that every time I go to a Walmart, Target, Gamestop, etc... I look at what systems are available and most of them are in limited supply in some way. I have yet to see a Series X, PS5 or Switch OLED at an actual retail store yet. However, Series S and the other Switch systems are pretty easy to find nowadays.

Americans are eager to play every system nowadays.

So Sony held back on to some stock to release alongside Horizon, the way Nintendo often do with their major releases?
Or is hardware getting a bump same week as Forbidden West just a coincidence as sales are entirely dictated by production/shipping?

Switch sales are impressing me. It doing over 20m for this year is looking increasingly guaranteed barring shortages getting worse.

All Time Video Game Hardware Sales List:

1) PlayStation 2 (PS2) - 157,680,000 (155,000,000+ according to Sony) Mar. 31st, 2012

2) Nintendo DS (DS) - 154,900,000 (154,020,000 according to Nintendo) - Mar. 31st, 2021

3) Game Boy (GB/GBC) - 118,690,000

4) PlayStation 4 (PS4) - 116,658,745 (116,900,000+ according to Sony) - Dec 31st, 2021

5) Nintendo Switch (NS) - 104,527,151 (103,540,000 according to Nintendo) - Dec. 31st, 2021

Could Switch pass the Gameboy before PS4?

PS5 just exploded in Japan compared to last week. Funny because the Xbox Series and PS5 had very close sales numbers the week before this.

Xbox Series now up more than 40% year over year.
MS really are back in the game this gen.