I'd say it's because there are different milestones that people - fanboys, media, companies - set. There's so many ways to measure. Daily activations, current total market penetration... then there are variables like location (US or global?), range (smartphones or all mobile devices?)... Android is just winning them one by one, and this specific one happens to be one of the most important metrics, IMO.

I think we actually got that exact same comment on the last version of this story I saw. I assume next week we'll get this one as well, and so on. :-)

The story was news at some point, at least. It's a major milestone in the mobile OS wars.