Apple Maps is absolutely way behind in non-US cities; I happen to like Apple's UX more, but I wouldn't recommend anyone switch if Google is better in their area. I'm quite aware I'm in the area that Apple is arguably strongest in, although they're pretty good around all of the US now. People also have an idea of How Much Apple Maps Sucks that's somewhat frozen in time -- for instance, while their transit is way behind Google's, they're in 33 cities now, not 10. (And their transit maps tend to be more detailed than Google's in my experience, giving you specific exits from larger transit stations to take.)
At any rate, sure, Apple Maps isn't as good yet. They launched years after Google Maps and with a much smaller team. (There are some interesting politics behind that, from what I've heard; just say that the fiasco of the Maps launch is the primary reason Scott Forstall is no longer with the company.) The team now numbers over 1000, from what I've heard, and I expect the gap to continue to close -- but it's going to continue to take a while.