I assume this is meant as a joke, albeit a rather strained one? I am pretty sure claiming you make your data available to law enforcement is not exactly a selling point.
Quite frankly, it is all BS anyway since Microsoft is the company currently at odds with the feds over withholding data on its overseas servers from the Justice Department and intelligence agencies. Google and Apple also hardly have reputations for blocking access and anyone who thinks they do not have keys to the encryption is being very na?ve. Google, in particular, lives off of harvesting peoples' data, confidential or not - people should read one of their user agreements sometime if you want to see what the corporate version of NSA looks like. If they can use your data to bombard you with targeted advertising, it is a pretty good that safe as a glass revolving door.
BTW, do you think that terrorists, etc., flock to Windows Phone? It would be the pseudo-logical conclusion that all illegal activity tracked and/or intercepted by intelligence agencies, law enforcement, etc., occurs within the 3% WP unencrypted market share. I am not sure but it would seem pretty likely they have access to the other 97%, otherwise we must all be a rather unsavory lot since we account for all the evils of the world.
Sorry but any bluster about Google or Apple is almost certainly just for public show. They can get what they want, when they want it. That also even applies to Blackberry's vaunted security. If they agencies do not have voluntary access they hack it and none of these OSs would count as particularly complicated so it would hardly take much time. In reality though, I doubt the have to go that route much at all. .