Eurogamer: Nintendo NX is a portable console with detachable controllers (It also connects to your TV, and runs cartridges)

[umegames]

The thing about this if true, Parents wont hesitate to buy a "console" for their kids, that they can also play on the go, as opposed to buying them a 3DS and a wii-u or other system.

That alone will shift alot of units just for ease.