Text: While Gillette's razors are technologically superior to Schick's and Campbell's soup tastes better than its competitors', the quality differences aren't big enough to account for these companies' ability to combine premium pricing with huge sales.
Entailment: Yes, Gillette's razors and Campbell's soup are better than their competitors', not by much that it warrants a higher price.
Contradiction: Gillette's razors are not technologically superior to Shick's nor is Campbell's soup better than its competitors.