After that is the Wii then GB then PS4 (it should be ahead of the GB soonish), then the two kings - DS and PS2.
If Nintendo doesn't cut the Switch short prematurely, Wii, PS1, and GB should be in the bag. After that it gets tricky.
DS and PS2 are possible only if Nintendo keeps supporting it for another three or four years and drops the price.
VGChartz Sales Analyst and Writer - William D'Angelo - I stream on Twitch and have my own Youtube. Follow me on Twitter @TrunksWD.
Writer of the Gap Charts | Weekly Hardware Breakdown | Top 10 | Weekly Sales Analysis | Marketshare Features, as well as daily news on the Video Game Industry.