1) lol. did you ever heard of "hypothesis" in science?
Yes, but it seems you do not. Your "hypothesis" is a completely unrealistic one (usually they at least have some basis in reality), which has no relation to anything that is happening in the real world. Your example is also not in any way the same as what Nintendo is doing with the Wii U. You compare getting some old parts and putting them into a box (so, basically, you are compiling an old school computer, not R&Ding completely new hardware) the same as Nintendo coming up & manufacturing new custom hardware that is significantly more powerful than their last hardware & offers a new way of control for games. One does not advance in any way, the other in multiple ways.
2) for all we know it could have nasa equivalent supercomputers.
but noone sees any difference from todays console technology.
I see it running games that Wii never could and has new technology Wii never did, hence it's Nintendo's next generation console. What YOU perceive as "next-gen" (as if it's some "MY games can have this much particles and has so and so many pixels" way of classification) is nothing but the effect of marketing from publishers during this generation. They wanted to sell their expensive games and by touting "NEXT-GEN GRAPHIXXXXXX" everywhere they got people hyped & buying their products.
SNES/Mega Drive is a generation of consoles
PS1/N64/Saturn is a generation of consoles
PS2/DC/GC/Xbox is a generation of consoles
Wii/PS3/Xbox 360 is a generation of consoles
These all because they were released at roughly the same time period and they were competing with each other for market share and really has nothing to do with their hardware.