... Google has been doing this for eight times as long as Apple. It'd be shocking if Apple had already surpassed them in content.
Technology wise, you're wrong, plain and simple. Google's mapping services are bulky and dog slow. They have to load individual prerenderedimages tiles for every zoom level when you're in top down view, and don't even get me started on how stupid their street view implementation is from a resource perspective (or UI perspective.) Apple's vector based maps + flyover put Google maps to shame.
I'm in the US, so my mileage may be different from yours, but I find the content to be acceptable. It hasn't been wrong yet, but there's some things that it doesn't have (like public transit routes... That's by far the biggest reason I have Google Maps installed on my iPhone, although to be honest, I memorized the major routes over a year ago and I rarely need to take any minor routes.)