All the factors we show are weighted on a scale of one to three, as shown in the top right corner of each factor, as well as reflected in the hue of that factor. A weighting of three is most important and is something you should pay special attention to because it has a bigger impact than other factors.
The weighting is based on a combination of what search engines have said, surveys of the Organic SEO community, as well as our own expertise and experience in watching the space over time. We don’t expect them to be perfect. Not everyone will agree. Your mileage may vary.
That doesn’t mean that factors weighted two or one aren’t important. They are. It’s just that they are of less importance, relatively speaking, in terms of the other factors on the chart. Violations are also weighted, but in negative numbers, with negative three being the worst and potentially most harmful to your Organic SEO success.