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The above two answers are accurate, you should use your chat in moz pro to ask that question. However, maybe my experience can save you that convo. The Moz index is constantly being improved and they rolled out a new version recently. The issue you are having might be because your keyword just made it to the top of the index and Moz's data hasn't yet included or even crawled that keyword since its status has changed. I would wait a week and check again. Also, check the locality settings on your tracked keyword, maybe your personalised results have it as number one but a non-personalized global search wouldn't. If the error persists for more than a week, definitely check with them. I know from experience that it takes time for updated info to make it into your dashboard, especially for social media data. Moz provided very useful products and services but they aren't perfect ... yet...

From Whiteboard Friday - The Biggest SEO Mistakes SEOmoz Has Ever Made http://www.seomoz.org/blog/whiteboard-friday-the-biggest-seo-mistakes-seomoz-has-ever-made "3. Recommending People Use H1 Tags with Keywords This mistake is a little bit more subtle. For years, SEOmoz recommended including keywords in the H1 of pages. After we started doing formal machine learning correlation tests we found out that this tactic didn't actually help very much at all (including the keywords in normal text in bigger fonts worked essentially the same). This was a shame because it meant we wasted time and energy convincing our clients to update their H1s."