I tried a simple search for "Federer" here are the differences. Google gave me the most relevant search results without having to click any extra links.

From Google the news sources I get are:
- Boston Herald
- The Sport Review
- Xinhua News Agency (Chinese News Agency which supplies info to various newspapers around the world)
- NBC Sports

Here's Bing:

The default search didn't give me any recent info/news so I had to click on "News" on the left hand side.

The top results it gave me were from:
- Chicago Sun Times
- Asheville Citizen-Times (Where the hell is Asheville?)
- Augusta Chronicle
- Arizona Daily Star
- Tehran Times (An Iranian News website?)

Seriously - these are the news sources I get first?

I like Bing, its much better live.com ever was but still needs to improve a lot. Federer just won the French Open and it was big news, so it  should have displayed the information right on the frontpage of the search results. Even after drilling down to news I got some not so reputable links.

Nevertheless, my experiment to use Bing as my default search engine still continues. Make sure to check out the Search Engine Blind Test - which is a fun little experiment to play with the perception of search engines results.