torok on 31 March 2017
It's way too early to call. It's selling well, but during launch all consoles say as many units as it has on stock. PS4 first month absolutely destroyed PS2 first month, but it doesn't mean that Sony will sell 300M units. Vita and Wii U had good initial sales.
What we have now is a bunch of PR from Nintendo. We will only know how well it will sell in Q1 2018. Anyway, if I must take and wild guess, I would say that 3DS numbers are a possibility and that 40M is the absolute minimum. It also depends of his lifetime. Does Nintendo plan to realign their console launches with the competitors, launching a new hardware in 2020 and killing the Switch a bit early? Or will they forget Sony/MS timeline and their next device will arrive mid-gen again?
