A better question would be how probable is the NX to be more powerful than the PS4?
The PS4 has AMD's most powerful APU and there is no rumor/speculation of AMD having a more powerful APU in the works.
Just by the nature of APUs versus CPU/GPU it would be impossible for Nintendo to have a cpu/discrete gpu combo without the cost going way up. Would you buy a $500 NX? Unless AMD has some secret APU design but they are not that good at keeping things secret.







