There is just one major hole in your theory. Nintendo is first to market this time. Somehow or someway that will make a difference.
What people putting emphasis on this 'power' argument don't count is that wii launched when hd game development was becoming the 'norm'. Wii u has launched in no such era. Many developers will not move onto other platforms until the back end of 2014.
Edit: actually I stand corrected. There are several holes in this theory. More powerful consoles would mean to launch at a higher price to begin with. And special controllers like kinect will add so yeah a higher price point is still likely. Then you think about rising development costs and that leads to more expensive games.
There are plenty of examples from past generations. I will use the most recent one. What impact has vita had on third party support for 3ds? Absolutely none. People still support 3ds anyway.
One more thing to complete my year = senran kagura localization =D
