It's more basic than all that. The media gives us the info we're interested in, and nobody is all that interested in Android. 
Tablet market share:
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From this website:
http://www.hotappsntech.com/apple-ipad-expensive/
Irrelevant, I think.
Most Android people buy tools, and, almost as often, toys.
Most Apple consumers are, to one degree or another, buying a brand (though to be fair, Apple does tend to lead most segments they play in when it comes to early release of products).
This Harley compared to Honda/Yamaha/Suzuki/Et Al
This makes Apple more newsorthy, as more people express interest in the brand.
Does the tool/toy assumption apply to smartphones as well as tablets?
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Apple was the first to market a "real" tablet. Forget the failed MS tablets of 10 years ago. Apple as a single brand product is still the leader as the competition is divided in multiple players. Android devices run on every versions since 2.3 to the latest KitKat 4.4 which only represent about 9% of user base share.
Early adopters and now, brand loyalists keep Apple relevant. They buy and replace their devices to follow "new" versions sold by their favourite merchant. Android on the other hand is a price based market. Consumers, late to market buyers are price concious. They don't realy care if it doesn't have a famous logo as long as it's cheap to buy, runs relatively well, can browse the intarweb, get their emails and run Candy Crush or Angry bird.
So, yes, if you compare Apple to Android numbers, you get more Androids out there but if you compare Apple to Samsung, Google, Asus, et al. individually, Apple is still the leader. And they can rely on brand loyalty while the competition can't.
