Watch the below conveyor belt of Android devices and you understand why the platform is growing... and winning. Even though I am an iPhone user (and I love it) - I'd rather bet on the cross-device platform vs. the hardware (with specific operating system). It's the debate of open vs. closed and this video captures that visually and very well. Props to Google for visualizing it in such a way and differentiating themselves at the Mobile World Congress expo in Barcelona.

Video is from Engadget (with more photos)