RESEARCH STUDY
A study on which memories, across product, price, place and promotion, put a brand on a path to growth.
Vojtech Prokes & Jiri Boudal
The marketing debate
of 2026: Sharp vs Ritson, put to the test
Many influential thinkers have argued that it does, from Kotler’s Marketing Management to Ries and Trout’s Positioning. But in recent years, the work of Professor Byron Sharp and the Ehrenberg-Bass Institute has come to dominate marketing discussions with a very different argument: differentiation doesn’t really matter.
At this year’s Cannes debate between Byron Sharp and Mark Ritson,
the two agreed on almost everything. Except this.

Differentiation matters. Challengers can only enter established categories via certain needs
Brand size explains 90% of associations, but differentiation unlocks market entry. Only a third of needs behave like taste in colas, with everything ±3. About 14% of needs look like US dog food.
Small and mid-sized brands need to avoid low-movability needs and fight where the battle is still open. These are the needs where David can beat Goliath.
Big brands
more losses than wins on high-movability needs
Small and mid-sized brands
as many wins on high-movability needs as on low-movability ones
Small brands
wins on low-movability needs for small brands founded in the last 30 years
Green: linked to the brand more than its size predicts. Red: less.
Explore all eight categories in the full study →Green: linked to the brand more than its size predicts. Red: less.
Explore all eight categories in the full study →Green: linked to the brand more than its size predicts. Red: less.
Explore all eight categories in the full study →Brands of different sizes should fight on different needs. Three questions show which.
Every need has all three characteristics. How much each one shifts the chances of a breakthrough depends on brand size, so what helps a small brand grow into a mid-sized player may be the wrong choice for a market leader.
Movability
Can a brand stand out beyond its size?
Occupancy
Is there room in people’s minds?
Prevalence
Is the need big enough?
A deep dive in four chapters, with the data behind every finding
While brand size explains around 90% of brand associations, most brands still have distinct strengths and weaknesses that set them apart, often in ways their competitors cannot match.
The remaining 10% of associations, beyond what brand size predicts, is where brands can find room to grow by focusing on needs that are movable, underoccupied, and relevant to enough buyers.
Mental availability comes from memories linked to all four Ps: product, price, place, and promotion, not just category entry points, and these associations can all influence buying decisions.
Traditional trackers often confuse brand size with genuine differentiation, so the study uses better methods to identify brands’ earned associations.
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Find the needs your brand can actually win
The full paper shows how to apply the three questions to your own brand, with the evidence from 246 brands behind each one.




