No, but it can provide a very reliable basis. Precious few things in this life are known as absolute facts. Many a fact gets overturned. All we really have is evidence and logical conclusions based on evaluations of said evidence. All the evidence points to Wii being pretty much an overclocked GC with more RAM. One can choose to ignore the evidence and believe there's more to Wii than that, just that nobody knows about it (and Nintendo themselves aren't implementing the hardware to effect to showcase the hidden powers...) and that's one's prerogative, but there's absolutely no basis for discussion with that. If one isn't going to argue the evidence we have, and only gut feelings, the debate is reduced to stating opinions.