wii u didn't release too soon and is comparable in power with ps4/xone.

these were the words: "When this happens, home consoles and handheld devices will no longer be completely different, and they will become like brothers in a family of systems."

I doesn't get much clearer than that. there will be handhelds and there will be home consoles. there's no sharing the same games, only sharing the same architeture.

Yeah, no, it's not. It's comparable in power to the PS3/360- slightly worse CPU, decently better GPU. It heavily lags behind the PS4/One- an aging architecture, less cores in the CPU, a GPU that's generations behind, and much less RAM. 

No there aren't. Iwata said their next consoles, plural, handheld and home console, would share the same architeture. No mention on sharing games, just easier development, period.

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. However, we are hoping to change and correct the situation in which we develop games for different platforms individually and sometimes disappoint consumers with game shortages as we attempt to move from one platform to another, and we believe that we will be able to deliver tangible results in the future.

Yeah, no, it's not. It's comparable in power to the PS3/360- slightly worse CPU, decently better GPU. It heavily lags behind the PS4/One- an aging architecture, less cores in the CPU, a GPU that's generations behind, and much less RAM. 

I expect the next Nintendo console to be announced in 2016 and release in 2017, around 5 years after the Wii U launched. I expect them to want to move onto to next gen sooner than Sony, and possibly MS, which will probably release the PS5 in 2019 or 2020.  (Edit: After thinking about it,  2019 seems more reasonable.  This way they could help promote it with a celebration of 25 Years of Playstation.)

Also, if Nintendo is going to go the cheap route, again, and aim for HW slightly more powerful than the PS4, then they should expect another repeat of this gen. Core gamers, for the most part, are not looking for slightly better graphics with a gimmicky controller. They are going to want a PS5, which will probably be ~4x-6x more powerful than the PS4 and will probably completely blur the line between cinematic and in game graphics.