Remember - the discussion is about what platform is dominant. The fact that messaging is implemented an app doesn't change that. New developments occur on iOS first for a reason.
My question was wrt to source of your stat.
Anyway it seems useless continuing this. I suppose you would come back some other Apple this and that line. I just wanted to know where you got the stat. Since i am not getting any references i assume you made it up.
http://blogs.barrons.com/techtraderdaily/2015/02/09/apple-ha...
Android is simply not dominant.