Perceived quality provides a reason to buy. A brand will have associated with it a perception of overall quality not necessarily based on a knowledge of detailed specifications.
The quality associated with a brand can also be a strong factor of differentiation and positioning.
Building a strong durable brand implies nevertheless an above average quality positioning or at least a minimum perceived quality when considering brands positioned as low market competitors.
Perceived quality can also attract channel member interest, allow extensions and support a higher price that provides resources to reinvest in the brand.