That's because the Weekly Numbers show the hardware sold across all of North America.
This chart only shows the United States.

Odyssey made 3D World look like a mistake. Ether way these are crazy numbers. I can't wait until we see the holidays.

Noted! Great SMO numbers. Has a Mario game done the million mark in its first week?

First Week Comparisons:

Super Mario 64 DS (...DS): 222,575
Super Mario Galaxy (Wii): 526,910
Super Mario Galaxy 2 (Wii): 705,394
Super Mario 3D Land (3DS): 302,878
Super Mario 3D World (Wii U): 144,156

Super Mario Odyssey (NS): 849,497

Since we don't have data for Sunshine or the original 64, I can only assume that this is the greatest launch for any 3D Mario game in history.

Indeed is the greatest. Mario won’t slow down ever. Comparing with the install base I think that makes it more impressive

It had an ever smaller install base to work with than Galaxy 1 did for the Wii, which is currently the best selling 3D Mario game. 
If Odyssey's legs are just as impressive and great as its launch, than it's set to become the new best selling 3D Mario game, by far.

Do the Super Mario 64 numbers include Shindou Super Mario 64?

I don't know what that is, so I can't answer that question.

Everybody is talking about Mario O... but Assassin's Creed Origins had a better first week than Unity and Syndicate if i'm not wrong

3D World was a mistake. :P