What Dvorak should say is that Apple Maps Leads The Way In Navigation For The Area They Travelled On That Single Day. This included routing to Apple’s headquarters, which will have given Apple Maps a small advantage from the outset, as Apple employees will test this journey daily for their own commutes. In Dvorak’s test, Apple Maps did ‘win’, but in another city, another state, another country the results would be different.
You can’t make claims of Apple Maps’s superiority on the basis of a single journey.