well, it does matter a lot if like some people here, you're a software developper planning on developping on ios or android. if ios is 10% "market share", it means android is 90%, so you better be learning the subtilities of android sdk and forget about improving your objective c skills. if it's 90% share, it means you can safely tell your customers to start building an ios version of their app first, then maybe later see if they want to invest on an android version.

and finally if it's 50/50, and stays like that for a couple of years, then you should probably invest in some cross-platform development environments.

it's not just marketing, believe me.