The competitor tab will compare each site to the same article metrics you are targetting.
Namely
- Word count
- Keyword usage
- Heading usage
Instead of displaying a score out of 100, each sites comparison to your goal score is highlighted using a progress bar.
You can see very quickly from the above image that competitor at position 3 has optimized their content a bit better than the site in number 1 position.
The goal metrics are the same as the ones used to score your own article.
You can see that the target word coupont 1630 is the same for me and the competitor.
You can see quickly from the colors that my article still has a ways to go to catch up to competitor at site position 3.