Google announced a new beta AdWords feature that gives your more insight into your AdWords competitors. The new beta feature is currently a limited beta and is named analyze competition. You can check under the Opportunities tab to see if you have this feature or not.
What does it do? The tool looks at the past two weeks of your campaigns and lists categories that represent the products or services you’re advertising. Google will then add a bar graph of your individual performance compared to the average performance of other advertisers in the same category. You can hover your mouse over the ‘Competitive Range’ column to dig deeper into the numbers, showing you the mean and median performance levels for this range, as well as data on the absolute top and bottom performers.
For more information, see this help document and here is a picture of the competitive mouse over: