So Odyssey has already sold 2 million copies in 3 days, which is over half of what Splatoon 2 sold...

Sorry I just don't see this happening.

Good joke!

... Oh, you're serious?

I really think so. Why are so many saying this is a joke thread? XD

Maybe because you picked the day, where every other thread is about Mario Odyssey's ridiculous sales in it's first week.

Not likely, but the worst part is your reasoning. xD Come on man, it won't sell better due to Nintendo wanting to focus more on it because they'll have an online service. Plus, I know VGC is undertracking Splatoon 2 A LOT, but its legs are not THAT impressive so far, I bet Oddyssey will leg out better... on top of having a better start, of course.

Nope, both will have spectacular numbers but Oddissey will win this one.

Nope, not happening.

You can expect Animal Crossing type sales from Splatoon 2
Pretty good everywhere else; Absolute Monster in Japan.
As such, I would now expect around 12-13 million lifetime from it.

Mario, on the other hand, will be on another level.
Odyssey just had the best launch ever for a 3D Mario game in Japan.
https://gematsu.com/2017/11/media-create-sales-102317-102917
And with 2 million in its first week, right before the holiday season + overwhelming critical acclaim, expectations are now that Odyssey will become the best selling 3D Mario game of all-time;
A title that currently belongs to Galaxy 1 which sits at 12.76 million according to Nintendo:
https://www.nintendo.co.jp/ir/en/finance/software/wii.html

Splatoon 2 will be a huge seller, one of the Switch's best, but Odyssey will be on a class of its own.

Bold prediction is bold, but highly unlikely

Possible in Japan