Your figures sound dodgy (and, prospective down voters, you'll want to stay with this until the end).
The article makes clear that the US contributes the largest proportion of the pot to both stores.
In the US the iPhone 5 recently outsold all Android devices combined (quite accurately reported as e.g. http://qz.com/31396/apple-outsells-android-in-the-us-for-what-could-be-the-last-time-ever/ ).
Conversely, earlier in the year Samsung had a two-to-one lead over Apple(eg, http://www.christianpost.com/news/samsung-sold-double-apples-iphone-sales-thanks-to-galaxy-s3-78977/ ) so that's a highly seasonal trend.
Nevertheless, the reported story is exclusively about 2012 so the presumably temporary reversal of normal sales trends is quite relevant. My feeling is that the Android figures currently look proportionally worse (shortly after the iPhone 5 peak) than they will in, say, six months. If I were a developer making my decision solely on revenue trends I'd put more weight on Android than the bare numbers of this report suggests.
That hypothetical being said, I actually am a developer and can tell you that we consider iOS and Android to be equally important on the grounds that iOS earns us more money right now but the potential for user growth under Android is fantastic. In terms of being healthy not just now but five years from now I think you'd be stupid not to bet on both.