Android's 'weak gravity' means users drift away to iPhone, study finds
theguardian.com
theguardian.com
A thousand is generally accepted as the minimum significant sample for statistics, so this study may not be representative of the whole UK market.
However I'm typically in the case they describe : I'm a first time Android buyer and my next phone may well be an Apple.
There are a lot of apps that I see on iPhones that are not ported on Android.
Android particularly lacks a good GTD solution like Things and Omnifocus.