1 - It's the apple trolls that claim that iOS is the largest (in terms of market share) platform - so if you play their game you might as well give accurate facts.
2 - Market share proves nothing except for how successfully a product was marketed.
3 - You keep comparing the iPhone line to all Android phones in existence. And you somehow attempt to pass this as a valid comparison by treating android as a BRAND, when in fact it's not a brand. You fail to realize that android is an open platform that is running on a host of different devices. Android is like Linux - it can run on ANYTHING - even those over-priced under-performing shiny white toys apple tries to pass as "computers" - oh, sorry.. i meant, "The Apple experience delivery platforms".
4 - If we refer back to point (2) you will note that Android is EXTREMELY successful, in terms of a financial success and being a market leader. It does not mean that android is "better" or is a whole "solution". Whether you like it or not, Android is doing in the phone space what Windows has done in the PC. Yes, PC is the dominant platform - even though Apple tries to present as a platform for suit wearing "serious" consumers, compared to the trendy and cool musical-silhouettes Macs are.
5 - Units sold is the measure by which Market share is determined. And while we agree it says nothing about the quality of the end product - the fact that Android has a massive market share, makes the entire platform more attractive for developers which in turn increases the market share even further. That's a positive feedback loop. Just like Microsoft has in the PC market.
6 - "average" experience is meaningless, because had you listened to anything I had to say, you would realize that Android is not the WHOLE solution. it's merely PART of the solution. And the fact that carriers deter from the experience is not Android's fault... but that doesn't matter, since the more android phones there are the more "alive" the platform is. See point (5)