A negative review that compares you with a rival does no more damage than a plain one — and answering it with a comparative ad works worst of all

Consumers meet negative reviews online constantly; some compare a product directly with a competitor, others simply complain. The study asks whether comparative negative word of mouth hurts attitudes towards a product more than the non-comparative kind, and how attribute-based advertising — itself comparative or not — moderates that effect.

A 2×2 between-subjects experiment with 100 university students in Pakistan (aged 17–26, mean 20, half men and half women). Each read one negative review of a fictitious hands-free headset brand (comparative or non-comparative), then saw one advertisement for that brand (comparative or non-comparative), and rated attitude towards the product on four 7-point items (α = 0.90). The attributes used in the messages were selected through three pretests of 50–52 respondents each. Every participant correctly identified the message format in the manipulation check. Analysis used two-way ANOVA. Ethics approval was granted in December 2022.

• Hypothesis 1 was not supported. Comparative and non-comparative negative reviews produced attitudes that did not differ (means 3.39 vs 3.61; F = 0.67, not significant). The authors read this as consumers reacting to the negativity rather than to the structure of the message.
• Advertising did moderate the effect (reported p = 0.00), but in the opposite direction to the prediction. After a comparative negative review, the non-comparative ad produced the better attitude (3.68 vs 3.11), not the comparative counter-ad the authors expected.
• The best-performing pairing was a non-comparative review followed by a non-comparative ad, with mean attitude 5.07 out of 7. The worst was a non-comparative review followed by a comparative ad, at 2.15.
• The authors offer three explanations: negativity bias that swamps message format, the heavier processing load of comparative messages, and Pakistan's cultural context, where comparative advertising is uncommon and often regarded as improper.

For a brand facing negative reviews: answering with “here is why we beat the competitor” may reinforce the negative frame rather than dispel it. In this setting, an ad that spoke plainly about the product's own attributes performed clearly better. Having an informative ad in front of consumers at all offers an alternative narrative to the review. And before using comparative advertising in any market, check whether people there regard the format as normal or as improper.