In my area (Santa Rosa, CA) Apple Maps is still worse than Google Maps. The routing is often very strange and it sometimes still can't find stores like OfficeDepot close by.
I can't speak for US but in Australia and UK it is so far behind Google. It feels like 1/3 of them are simply missing and a 1/3 of them are inaccurate in some way e.g. opening hours.
I don't know how Foursquare and Yelp who supply Apple are surviving right now with such inadequate data.
Does Apple let users update POIs? We went to a restaurant recently and it was closed, I snapped a photo of the hours and tagged the restaurant with it in Google Maps and it was updated to reflect the correct hours the same day.
1. Press the circle-i icon on the top left of Maps.
2. Select Report an Issue
3. Select Map Labels
4. Fill out the form, and add pictures.
5. Wait a few weeks.
