Seriously..... HOW IGNORANT CAN YOU GET? It looks like you read all of the rumors and believe them like they're facts. Nintendo has been trying to get 2 tablets working at the same time. As for other controllers, it's up to the developers what they want to use. The Wii Remotes were just an example of what they could do. Don't forget about the good Classic Controller Pro. As for the power rumors..... MAYBE you should believe what the developers are saying, rather than an anonymous source.
OFFICIAL developer Crytek:
Crytek "Impressed" With Wii U Hardware Specs
Some anonymous source:
Wii U to be less powerful than Xbox 360 and PS3? | News | TechRadar
Believe those anonymous rumors all you want. But DON'T go talking about them like they're facts.
Sorry if I come off as rude, but I'm getting tired of reading this rumor bullcrap.
EDIT: The Steambox won't be happening anytime soon.