So, it's dropped ~2.1M below the PS4, launches aligned. Personally, I never saw it hitting PS4 numbers, anyway. That's not to say it will do poorly. 3DS numbers, and probably a little beyond, should be doable (~75M-85M.) Year 3-4 are going to be the telling years. Will legs hold out. Or will it start to drop like the Wii.
It will blow past the PS4 in November.
PS4 had two holidays tracked.