Except they don't really force the lowest common denominator. It's not too hard to write a plugin for cordova. Additionally, React Native isn't write once run

Except they don't really force the lowest common denominator. It's not too hard to write a plugin for cordova. Additionally, React Native isn't write once run everywhere - it's learn once run everywhere. And it interfaces with the real native widgets and has the javascript on it's own thread. That's anything but feeling right. It's more like Javascript bindings than a totally new paradigm.