If Google was all I did with my devices, then sure, Android is the way to go. But this article discounts pretty swiftly that there is more to a device than my Gmail and Google Now.
As for me, I like Google Now and will continue to use Gmail integrated with my iPhone's mail client, but I'm not willing to walk away from my decade of iTunes use and migrate my media elsewhere, and there isn't an Android equivalent to my AppleTV experience yet (are they even still selling the Nexus Q?), especially over not having to log in multiple times.