Apple is so far behind outside of the places they prioritize that it'll take decades at this pace to get on Google Maps' current level. It's really useless in places like Eastern Europe, where Apple has no interest in supporting and isn't likely that it'll turn that around any time soon.
For example, see random part of Poland: https://www.openstreetmap.org/#map=15/52.1081/21.1167
Main power of Google is live traffic data.