Wii came out a year after the 360 and was around the power level of the original Xbox.
Wii U came out seven years after the 360 and was only slightly more powerful than it.
NX being more powerful than the PS4 three years after its launch would be a pretty big change in how Nintendo operates.
It's been a rough few years for them.
I'm confident that they've changed for the better with the launch of the NX.
They kinda have to, otherwise their home console business will be in jeopardy.
Then again, power is just one of many obstacles for a Nintendo home console.