The extent to which you are different from the others.
The reason why we need more design research(ers).
Market research identifies and acts upon optimal market and consumer leverage points to achieve success. Its definition of success is not absolute, though metrics are often financial. Design research, on the other hand, is founded in the belief that we already know the optimal market and consumer leverage points: human needs. Unearthing and satisfying those needs is thus the surest measure of success.