Windows on ARM has yet to take off, but the rumored Qualcomm Snapdragon 1000 could change the performance equation considerably. New details have surfaced about the chip, and it could be just what WoA devices need to put them on a more even footing with native x86 ultrabooks.
https://www.notebookcheck.net/More-details-about-WoA-Snapdragon-1000-surface.332724.0.html