It is still a little sad to see 3rd party games with same day launch not doing as well on the Switch in the FW. I think the Switch version should be able to leg it out.

Top 30: https://nintendoeverything.com/famitsu-software-sales-6-21-21-6-27-21-top-30/

1. [NSW] Mario Golf: Super Rush – 80,430 / NEW
2. [PS4] Samurai Warriors 5 – 55,675 / NEW
3. [NSW] Samurai Warriors 5 – 38,691 / NEW
4. [NSW] Game Builder Garage – 23,280 / 126,008
5. [PS4] Scarlet Nexus – 20,160 / NEW
6. [NSW] Ring Fit Adventure – 13,756 / 2,654,669
7. [NSW] Minecraft – 11,888 / 2,019,432
8. [PS4] The Legend of Nayuta: Boundless Trails – 11,230 / NEW
9. [PS5] Scarlet Nexus – 11,008 / NEW
10. [NSW] The Caligula Effect 2 – 10,243 / NEW

11. [NSW] Miitopia – 10,054 / 169,640
12. [NSW] Momotaro Dentetsu: Showa, Heisei, Reiwa mo Teiban! – 8,540 / 2,242,440
13. [PS4] The Caligula Effect 2 – 8,454 / NEW
14. [NSW] Mario Kart 8 Deluxe – 8,277 / 3,888,483
15. [NSW] Monster Hunter Rise – 7,522 / 2,272,644
16. [NSW] Super Mario 3D World + Bowser’s Fury – 6,430 / 790,477
17. [NSW] Super Smash Bros. Ultimate – 6,062 / 4,318,560
18. [NSW] Animal Crossing: New Horizons – 5,593 / 6,807,289
19. [NSW] The Wicked King and the Noble Hero – 5,433 / NEW
20. [NSW] New Pokemon Snap – 5,384 / 248,991
21. [NSW] Clubhouse Games: 51 Worldwide Classics – 4,531 / 734,237
22. [NSW] Super Mario Party – 4,459 / 1,918,488
23. [NSW] Ken ga Kimi for S – 3,981 / NEW
24. [PS4] Rust – 3,671 / NEW
25. [NSW] Splatoon 2 – 3,630 / 3,888,454
26. [NSW] Pokemon Sword/Shield – 3,629 / 4,071,349
27. [PS4] Resident Evil Village – 2,803 / 189,718
28. [NSW] Zelda: Breath of the Wild – 2,617 / 1,829,389
29. [PS4] The Wicked King and the Noble Hero – 2,533 / NEW
30. [NSW] Fitness Boxing 2: Rhythm & Exercise – 2,402 / 113,707

NS - 22

PS4 - 7

PS5 - 1

If Xbox can sell around 5,000 units per week in Japan this gen that would be really good for them.

Not much coming up for the Switch in the next months that could help sales maintain the lead vs. its last year performance.

Zelda SS HD won't do the trick. Next big thing is Mario Party N64 boards Remake, but that's not that big either. Pokemon remakes will be respectable, but nothing super big. Unless SMTV is huge, it's a missed opportunity for Nintendo this year. Metroid, WarioWare and the Advance Wars remakes will be small to medium sized.

Mario Kart 8 Deluxe (3,888,483) finally outsold Splatoon 2 (3,888,454) after almost 4 years.

Next up is Pokemon Sword/Shield.

Another week the Switch loses out against last year. And that despite new releases topping the charts (Mario Golf, Samurai Warriors). Looks like maybe the Switch peaked 2020.

Samurai Warriors still has the bigger base in PS4, while other multiplats (Caligula Effect and Wicked King) do better on Switch.

With Scarlet Nexus PS5 has a decent entry into the TOP 10, congrats. That is at the side of rising PS5 sales. Nice! PS5 finally can take a hold.

Similarly Xbox Series is doing surprisingly well. That is more impressive, as the split between S and X suggests, that this week Xbox was hit by supply constraints, as the more popular X dropped to last week and people switched to S. Seems even japanese gamers cannot resist the sirens call of the Gamepass.

So it looks pretty good for the two new systems.

Monster Hunter Rise sales have slowed down significantly, it seems Momotaro will overtake it again soon.

Some quarterly Switch data:

I really doubt it. The switch is still 334575 units ahead compared to last year. Next week is 52k for last year so switch should increase the lead again. This week Switch just crossed the 3M mark something last year Switch didn't do till week 30, so basically is still 4 weeks ahead. 

edit: typos

How's Switch supply in Japan? Can't sell what they don't have...