This experiment is flawed. iOS 5's forward/reverse geocoders are using Apple's servers, just like iOS 6. The only way to use Google's forward geocoder data is

This experiment is flawed. iOS 5's forward/reverse geocoders are using Apple's servers, just like iOS 6. The only way to use Google's forward geocoder data is to make a REST request with your own API key using NSURLConnection yourself. In iOS 4.x you can use MKReverseGeocoder which would return results from Google, but this class was rewritten in iOS 5 to be a thin layer on top of CLReverseGeocoder (using Apple's servers).