Of course he knows it. His comment said he was introduced to Google Now on his Nexus. Google Now requires a minimum of Android 4.1.
iOS feels pretty old-fashioned in comparison.
Pretty subjective. I feel it's the other way around, with Android feeling old-fashioned, although I really like Android's power. I use both Android and iOS daily.
As you probably know, Google Now is on Jelly Bean and up (Android 4.1+)
According to Google's own statistics, just 25% of Android devices [that access the Play store] are on Jelly Bean. Almost 70% are on Ice Cream Sandwich or Gingerbread.
Not sure how many iOS devices have the Google Search app installed, but I wouldn't be surprised if the percentage of total iOS devices with Google Now is > 25%...
