These articles prove that for areas where the data exists and is accurate, iOS 6 maps are competitive, and will likely evolve into the category leader.
It still doesn't change the fact however, that all you Americans doing your web reports and blogs about maps are looking at things through the wrong end of a telescope. With few exceptions, when you step across the US border ... almost all the data is pure shit.
Fact: Maps won't really be usable by the rest of the world for at least a year or two.
(just as Siri is only just getting basic functionality outside of the US a full year after it's debut)
My advice to the privileged Americans, is to stop expecting the rest of the world to agree with you that maps is great, because it just isn't and won't be for a long, long, time. This is not some minor hiccup. In most cases, it's the loss of almost all navigation ability for a period of years for iOS users who don't happen to be Americans.