If you install other ios simulator lets say iOS 7.1 and already have iOS 8.3
In Xcode you can distinguish between "iPhone 5s 7.1" and "iPhone 5s 8.3"
The problem is that in cordova cli, with cordova emulate --list user can not distinguish between them you get duplicates, and no way how to target a specific one.
$ cordova emulate --list
Running command: /Users/csantana23/foo/cordova/App0424/platforms/ios/cordova/run --emulator --list
Available iOS Virtual Devices:
- RUN SUCCEEDED **