Nintendo usually sells 50%+ of their consoles during Q3. And I am sure they are banking on 10M+ in that quarter this year and with Super Mario Party, Pokemon and Smash.. It's very much a good posibility that happens.
I am sure they were hoping for an increase YOY but it was close to flat so it probably doesnt matter. The system was never going to sell a lot more than 2M in Q1.