Wa HOOOO !!
If I remember right, Nintendo did announce that the game did 2.6M in 3 days ? Or was it more like 5-7 days ?
And if I remember right, the game has a digital ratio of 10-15% with this game which means that it probably achieved the 1M mark 1st week !
"Global sell-through of Super Mario Odyssey has already exceeded 2 million units in just its first 3 days."
Of course, this is also including digital, as NIntendo always counts based on shipped to retailers + digital sales.
So, I would expect global numbers on VGC to be just short of two million, since we only count physical sales.
Edit: And the 1 million mark in the U.S. alone is certainly possible depending on the physical:digital ratio.