Given Nintendo's history I expect them to try to hit comparable performance targets at lower cost than their competitors. They'll likely try to maximise the performance of the components they do chose (CPU and GPU) by tweaking the memory and bus architecture to complement the main chip. I don't think this as a bad approach; it's engineering within price and other constraints. I always had the thought that NX would be marginally more powerful than what's already out.
The technological arms race is kind of impossible right now with MS and Sony willing to refresh mid-gen. The crown of "most powerful" will be quite elusive. Perhaps Nintendo has a reply in the SCD stuff. It would be quite clever if a relatively powerful handheld could play games on the go and also function and a physically connected (or local wireless) SCD which boosts the console's capabilities.
The technological arms race is kind of impossible right now with MS and Sony willing to refresh mid-gen. The crown of "most powerful" will be quite elusive. Perhaps Nintendo has a reply in the SCD stuff. It would be quite clever if a relatively powerful handheld could play games on the go and also function and a physically connected (or local wireless) SCD which boosts the console's capabilities.