Hi Emilien, thanks a lot for your message.
I’ve spent time discussing with a guy at the Apple WWDC 2016. I’ve updated my article with what he told me:
By experience, Cordova is super painful for what concerns the maintenance.
And Xamarin increases the complexity of the configuration and the maintenance of the Apps, which is rarely compensated by the code factorization.
This is the hidden part of the iceberg: maintenance is a nightmare!