Now with the switch out we should see 3DS sales drop like a rock. I could see the 3DS selling 20k per week in a few weeks...
PS4 +PS4 Pro and Xbox One +Xbox Scorpio will be supported for at least 4+ years
PS4 outselling the 3DS is a given
I could see Xbox One outselling it in a few years. It will likely be outselling the 3DS by about 100k on a weekly basis once the switch has its skin in the game