[citation][nom]Azn Cracker[/nom]Didn't they learn their lesson with the 3DS?[/citation]
Nintendo =/= Toshiba. Not even close. If it'd been the Vita and this were a VAIO model, then maybe there'd be some argument, but even then those are made by separate divisions.
There's also the fact that the 3DS dropped only a few months ago, and that's not really enough time for the rest of the electronics market to accurately analyze. This model has been in the works for a while now; it'd take more than the 3DS to force them to cancel it outright.
In addition, the laptop market and the portable gaming market are not the same; at this point in time people essentially need a computer, probably a laptop, while they don't need a 3DS. It's easier to justify the former than the latter, especially since the laptop can still do everything a normal computer can do, while the 3DS is limited in its applicability.