It is unfair to compare. An application with an offline map is different, by design, that one where you can download the map or require a connection. Compare TomTom and Garmin with Google Maps and Apple Maps. Which one's used much more nowadays?
What has won is capability-based design, and the fact that the review system in iOS is better (but not perfect) compared to Google. The install base is also much larger though, and the amount of personal data on a smartphone has also increased greatly.
The question we need to ask ourselves is the following: do we really need all this data available on our smartphone? Or, put different: do you need to be able to access this data while on the go, 24/7? Do you need to take your smartphone with you 24/7?
What has won is capability-based design, and the fact that the review system in iOS is better (but not perfect) compared to Google. The install base is also much larger though, and the amount of personal data on a smartphone has also increased greatly.
The question we need to ask ourselves is the following: do we really need all this data available on our smartphone? Or, put different: do you need to be able to access this data while on the go, 24/7? Do you need to take your smartphone with you 24/7?