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#20
Running Android apps on WP or porting apps to WP is not the problem for the majority of developers. The apps are 'weak' because the APIs exposed by the Windows Runtime are weak and severely crippled in comparison to other platforms.
At least 6 apps I've wanted to port to WP over the last few years just can't be ported to WP (aka Windows Runtime) anytime soon since the APIs are either severely lacking and/or missing important features or have been restricted to Microsoft-only applications such as Edge (this same issue is one Google raised about the inability to port Chrome to WP anytime soon). The majority of android applications just can't ever be ported to WP due to these issues and its the same issue if you tried to 'emulate' these applications since the emulator would also need these APIs for the application to actually do what its able to do on Android and other platforms.
Hopefully in the next few years Microsoft will have closed the API gap with future versions of the Windows Runtime (and WP10) but I don't expect any serious work being done here considering the last 3 years of developers complaining about API issues when they have tried to port their applications. This is why WP apps (and W10 store apps) have been severely lacking features, functionality and unable to properly compete with Android
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