To be honest that Iwata quote from above is misunderstood, he doesn't debunk anything.
He says basically there could be more than two form factors (handheld + console as there is now), but there may ultimately only be one, it just depends on what consumers tell them. People should read his entire quote not just one snippet of it. Here's the quote fully:
IWATA: Still, I am not sure if the form factor (the size and configuration of the hardware) will be integrated. In contrast, the number of form factors might increase. Currently, we can only provide two form factors because if we had three or four different architectures, we would face serious shortages of software on every platform. To cite a specific case, Apple is able to release smart devices with various form factors one after another because there is one way of programming adopted by all platforms. Apple has a common platform called iOS. Another example is Android. Though there are various models, Android does not face software shortages because there is one common way of programming on the Android platform that works with various models. The point is, Nintendo platforms should be like those two examples. Whether we will ultimately need just one device will be determined by what consumers demand in the future, and that is not something we know at the moment.
He doesn't say there couldn't be just one device, he basically says they're not sure at that point in time. There could be as many as 3+, but on the other hand there could be just one device.
My suspicion is while there will be multiple form factors, there will only be one primarily form factor that has the majority of sales, and I think that likely could be the portable version which is able to stream games to the TV. I think that is central to the "novelty" of the NX line ... it's a handheld that can double as a home console at the snap of a finger.
There may be an optional mini-console/home dock type thing that runs the games on the TV at a higher resolution/better visual fidelity, since a home device can consume more electricity, but that device I suspect will be entirely optional and will be a secondary thing in terms of sales.
That's just my take on it though.







