PR measurement is no longer limited to counting media mentions. Communications teams need to understand how visible a brand is, how people perceive it, and whether PR activity is supporting wider business goals.
Two of the most common metrics are share of voice and sentiment analysis. Although they measure different things, they are often compared when evaluating PR performance.
So, which one matters more?
Share of voice measures how much media attention a brand receives compared with its competitors.
It is usually calculated by dividing the brand’s mentions by the total mentions received by the selected group of competitors.
A share of voice PR report can show whether a brand is becoming more visible, losing attention to competitors, or gaining influence around a specific industry topic.
This makes it useful for campaigns focused on awareness, market entry, product launches, and thought leadership.
However, visibility does not always mean success. A company facing criticism or a crisis may achieve a high share of voice for the wrong reasons.
Sentiment analysis examines the tone of media coverage and online conversations. Mentions are generally classified as positive, negative, or neutral.
In sentiment analysis PR reporting, positive coverage may highlight a company’s achievements or expertise. Negative coverage may focus on complaints, criticism, or reputational concerns. Neutral coverage usually presents information without expressing a clear opinion.
Sentiment analysis can help PR teams monitor reputation, identify emerging risks, and understand how audiences are responding to company announcements.
It is particularly important during a crisis or when an organisation is trying to build or rebuild trust.
Neither metric provides the complete picture on its own.
Share of voice measures the amount of attention a brand receives, but it does not explain the quality or tone of that attention. A high number of negative mentions can still increase the brand’s share of voice.
Sentiment analysis also has limitations. Automated tools may struggle to understand sarcasm, cultural context, mixed opinions, or technical language. An article may praise one part of a company’s strategy while criticising another, making it difficult to place under one category.
Coverage quality also matters. Ten detailed articles in respected publications may be more valuable than one hundred passing mentions on low-relevance websites.
For this reason, PR teams should combine these metrics with factors such as media quality, message inclusion, audience relevance, and spokesperson visibility.
The answer depends on the campaign objective.
Share of voice matters more when the goal is to:
Sentiment analysis matters more when the goal is to:
A company may have a larger share of voice than its competitors but receive mainly negative coverage. Another company may have fewer mentions but consistently appear as a trusted industry expert.
The first company is more visible, but the second may be building stronger long-term influence.
A useful PR metrics comparison should therefore consider both the quantity and quality of coverage.
There is no universal winner between share of voice and sentiment analysis.
Share of voice shows how much of the conversation belongs to a brand, while sentiment analysis shows how that conversation is being interpreted.
Used separately, both can create an incomplete picture. Used together, they help PR teams understand whether a brand is gaining attention for the right reasons.
The most effective PR measurement combines visibility, sentiment, coverage quality, key messages, and business outcomes. This creates a clearer view of what a brand is known for, how it is perceived, and whether its communications strategy is delivering meaningful results.
