Changelog for Wii U - 5.1.2 U update (August 18, 2014)
Version 5.1.2 U, available via an Internet connection, includes the following improvements:
Improvements to system stability and usability:
- Further improvements to overall system stability and other minor adjustments have been made to enhance the user experience
Improvements to system stability and usability:
- Further improvements to overall system stability and other minor adjustments have been made to enhance the user experience
I can only assume that Sony had some stability to spare and decided to give it to Nintendo.