3DS did 14.3m last year (with some major games - not quite as big as this year of course) and 3 months into 2013 it's down 16%+. We're talking about 17.5m in 9 months here, or almost 2m per month. I don't know what kind of boost you guys are expecting from Pokemon, but it certainly won't push 3DS to selling 500k-1m week after week and then 2m per week during the holidays. There would need to be a revision for 3DS to have a chance of reaching 20m.
Hehehe, you don't know pokemon very well, do you?