Hey Tylermon,
CJS has good performance on IOS. I tested one game on iOS Phonegap / Crosswalk and it seemed to have 80% of the performance of the CJS build. (before update).
Using CJS instead of Crosswalk on iOS
+ Little better performance but guess that depends on your project (and should disappear in the futured due to iOS8)
+ Multiple Ad network integration through mopub
- Longer loading times with Ludei Splash Screen
- Mopub has horrible fillrates ~ 60% and mediation to other ad networks seems to not work well sometimes too. (I dont know if this is CJS error or mopub error)
- CJS Plugin is officially deprecated and not recommended by Scirra
- Somewhen Ludei needs to charge you for there service (crosswalk is open source)
Especially if you want to publish your games to wp8 and android somewhen too crosswalk is the better choise. It is supporting an admob plugin for all those platforms and admob can mediate to other ad networks as well, but haven't tested it.
CJS is not working on wp8 and has some pains on android (long loading times (splash screen), logo flickering, audio delay, a lot of permissions required...). You can not disable or deselect permissions you don't need so I guess they are used for intense and hidden user tracking.
IMHO: If you want to use CJS then:
- Use it for iOS builds only
- Don't use C2 to build your game code
- Expect charges in the future
- Fear mopub issues if you want to monetize through ad banners