I had this exact problem, but then I bought a Wii U just yesterday... And I was one of the people telling you to wait ^^ This was my reasoning:
The article from Eurogamer had just hit and with it, it became obvious that the NX won't be BC, so your Wii U games won't function on it. People are saying that the games will be ported over, this is not set in stone as of now. Maybe they'll be ported over, maybe not. Emily Rogers, the woman that said that NX news would be coming soon the day before the Eurogamer article, have stated that both Splatoon and Mario Maker WON'T be ported over, or that Nintendo has problem porting them over. This could be the case for more games.
Second reason why I bought it: I got a really good deal on it, $168 WITH taxes, when it usually costs $264 here.
But if you mainly wanna play Pokémon, buy a 3DS I guess. That console have like 2 different Pokémon games already and are getting a new one this fall, AND it has access to the entire DS library of games.
I'm on Twitter @DanneSandin!
Furthermore, I think VGChartz should add a "Like"-button.
