Yes.

It's very unlikely that it will be as popular as Splatoon, but 3 million is certainly possible. It will depend on the Switch sales, but right now my prediction is 2.5 million.

Maybe if it was a 3rd party Sega game with a metascore of 50℅. People seem to forget that Nintendo never failed with a new IP and they are trying their best to make this IP as succesful as possible. There's no reason to create a new IP and bury it after one game.

Wouldnt bet against your predictions lol.

I think it will be a massive hit in Japan, how it works out in the rest of the world I dont know.. but it wouldnt bet against 3+ millions.

well i thought splatoon would flop, and look at how that turned out. so i guess this could sell that much.

5M low end.

They weren't really trying with that game, announcing it behind closed doors and all. If Pikmin can sell a million copies on poorly selling consoles then I think the more appealing ARMS should be able to get into the multi-millions.

No, I mean 1 million would be amazing.

Pokken is around a million and SF5 is like just over one million. 

It's definitely possible, though not a sure thing to happen just because Splatoon blasted expectations.

Though, LT, I do think 3 mil can be done.

I would gladly tell you a huge no, but then I remember the strange case of Splatoon and, well, I don't know anymore.

I don't think it's going to perform badly like some people are arguing here, but something between 1.25 and 2 million sounds acceptable.