Composite scores exist because stakeholders outside a marketing or SEO team, such as executives or investors, generally want one trend line rather than five separate charts. Weighting decisions, such as how heavily to count a first-position mention versus a buried one, determine what the score actually rewards, so two tools measuring the same brand can produce different scores even from similar underlying data.
A visibility score is best treated as a headline number that prompts further investigation rather than a replacement for the metrics feeding it. A score that drops is only actionable once it is broken back down into its components, since a falling mention rate calls for different fixes than a falling citation share or a shift toward more negative sentiment.