Ummm.. no. First, the Google route gives WIIIIDE room for customization despite Google's insisting on a pure Google experience (i.e. Amazon Kindle Fire, Nook Color, etc.). I can't see how the story, as you tell it, is true. Second, Microsoft made SPECIFIC and very firm demands for specifications that Nokia STILL has to adhere to despite the wiggle room Nokia is being given. This HAS been talked about quite a bit already.
So my question still stands unanswered: What map reasons?