I'm going with OP.
3ds isnt going to come close to DS, but PS4 easily pass PS3 in sales. wii U is only doing 20m lifetime in the best case scenario.
Also PS4 is likely to be around for 10 years (assuming sony is lol) since its basically a cheap PC which is powerful enough to continue getting ports of PS5 games, even if they are at 720p/30. I dont see more than 3 years left in the 3ds and even assuming it doesnt slow down compared to the first 3 years, it will get to ~90m.
I can see PS4 getting past 110m and outselling the wii U and 3ds (90+20)







