After some more investigation I have some more notes. "Monster Hunter Wilds takes the top spot. Total sales worldwide exceed 8 million copies."
Okay right there that is a massive boon for Capcom make over half a billion in the first week. For the PS5 that is huge when considering Steam numbers. Next, the 11-30 spots have been posted by Famitsu and it turns out that MH didn't chart on the top 30 (with the threshold for entry being about only 1500) units. This just doesnt seem right. Is MH exclusive in Japan? The big console's may be skewed towards digital sales in Japan than we realize.

After even more investigation I find that the current Xbox break down in Japan is:
Xbox Series S – 640 (332,626)
Xbox Series X Digital Edition – 46 (19,889)
Xbox Series X – 35 (319,519)

This means that over 50% of all Xbox consoles DO NOT take physical media at all. Then if you add the digital share of sales on top of that you probably on only have an addressable count of like 170k units. Even then with MH having an physical attach rate of 10% on the PS5, you would expect Xbox MH physical sales to pass 10k. So clearly there is something I'm missing here. I'm guessing its just not being sold on Xbox at retail in Japan.

Wilds must have high digital numbers as that's actually half of what World and Rise did at retail on launch.

I heard somewhere that PS5 has upwards of 80% digital share.  I'm one of those people who made the transition to nearly all digital.  There are obviously drawbacks but the convience is just too high.  I also have a Pro and I installed an extra hard drive so I have tons of space.  Not needing to uninstall anything really makes it easier to just download everything.  I also own ALOT of games and it really was taking up too much space for me.    But yes these figures imply that the total week one sales are between 1.5 and 2 million. 

Also, I find it really odd that MH isn't charting on Xbox.  Even with the muted install base it should be be doing at least 20k.  Then again, the digital share on Xbox is probably even higher considering the X/S lifetime breakdown compared to the PS5.

It was on the PSP and PS4 also.

 I find that the current Xbox break down in Japan is(...)

Much-needed shot in the arm for PS5 in Japan. The drop off will be rough of course, but hopefully this MH boost will allow it to settle at a healthier base line than we've had so far this year.

Xbox is dead in Japan. I mean it pretty much always has been but there were some signs of life in Xbox 360 and the earlier years of Xbox Series X/S.
It's absolutely wild that when PS4 sells a measly 20 (expected), even Xbox Series X can't crack a 100 units for either SKU. Series S is at 640. It's still effectively dead, but not as dead as Series X.

I understand what everyone is saying and of course you are right. I just thought since MH was so popular that it would 'lift all boats' makes me wonder if my Xbox/GTA 6 boost prediction was off too.

I understand what everyone is saying and of course you are right. I just thought since MH was so popular that it would 'lift all boats' makes me wonder if my Xbox/GTA 6 boost prediction was off too.