I suppose the iOS devices could threaten the 3DS more than the NGP, but, save for that, there's no real reason for 3DS to outsell the NGP by any less than 100m, and possibly touching upon 200m, in the long run since the DSP gap may itself end up nearing 100m.
“These are my principles; if you don’t like them, I have others.” – Groucho Marx







