It's not just about hardware or clock speeds etc. Here is some food for thought either way:
- which platform a developer's talent or experience is greater with. This can change over time too.
- how much resources a developer or publisher allocate to each platform.
- software features that are platform specific e.g. direct x or SDK.
- platform changes or optimisations e.g. launch vs. 6 months vs. developer feedback
There are many nuances to be tried and tested with new consoles, can't wait to see what both can achieve in first, second and third waves of games.
As for picking one over the other I have X1 day one and I'll pickup a PS4 early next year. From there it will be game by game basis for which I play what on.