Cook: 30% of those who've purchased an iPhone during Q3 2015 have switched from Android

Cook made the mention earlier today during Apple's earnings call for the fourth quarter of fiscal year 2015, stating that this is the largest number of Android switchers that the company has recorded since it started measuring switch rates three years ago. In Cook's own words, "It's a huge number and we're very proud of it".
At this point, it's worth noting that Cook appears to have grown fond of mentioning Apple's success in courting Android users. Earlier in the year, the Apple CEO said that the iPhone 6 and iPhone 6 Plus, the first iPhones to adopt larger form factors, have managed to secure switches from numerous former Android smartphone users.
What do you guys make of this? Is it surprising for your to learn that an increasing number of Android smartphone users are now jumping ship and getting iPhones?
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