I think it's great that wpcentral.com did pick up on this. However, I do not agree at all with the first part of the possibly meant to be funny footnote by Daniel Rubino:
Yeah, I know. Who would want to use Google Maps when Bing kicks so much butt? [...]
I suspect that Daniel is both Microsoft biased (not really a problem for me) and not based in the Netherlands, because even though I hear a lot of positive things about Bing Search and Bing Maps, I keep comparing it to Google Search and Google Maps and have not switched yet.
To be frank and rather blunt about it: Bing can't stand in the shadow of Google. Or at least it cannot in the Netherlands, which happens to be where I live and use these services almost exclusively.
Before anyone starts comparing actual mobile client features I want to point out that this is mainly related to (probably) legal and data issues and not to the technology. I just have the feeling Google in general "finds more" for me, gives me more useful results. Also, I like the visual style of Google Maps more than that of Bing Maps at the moment, but that could just take some getting used too.
So for now I'll take Google over Bing any way I can get it. And that includes a Google Maps client for WP7, preferably written by Google itself and including all the official Google Maps features.