Only if you think most of them are Samsung Galaxies or Moto X's. Most of them are just replacements for the low end Nokia's that used to be predominant. A billion cheap phones is not a new statistic.
Then you have to think that in 3rd world countries acquiring a smartphone means success... and of course that smartphone is going to run on android.
Stop thinking that Europe + America + Australia have more population than the rest of the world :)
I don't disagree with any of the statements you have just made, and nothing I said in my previous comment contradicts that - so why the attitude?