Different destinations.
No need to come here and complain about it when said user was having problems with Maps in the first place when they continue to allow themselves to step into poop. Apple hasn't issued a major fix as of yet and the fact that Google maps is now available per Apple's blessing that should prove that we won't see any major overhaul until iOS7.
Now, yes, while this thread is entitled "Apple Maps is a disaster", the people who continue to use it when they've had issues and come here barking about another dead-end that Maps routed them to makes them look a bit foolish. I highly doubt Apple is here collecting a bunch of info. Macrumors isn't Apple's main source for customer feedback, they have a section on their website for that and their own forums. Since I have to use my maps for real work I'll happily continue using proven technology, Garmin Street Pilot on demand.